regcomp leak introduced in f97565

[00pauln00]

f97565a introduces a minor leak where a compiled regex is not freed.

<574.109560627:warn:raft-net-test:raft_net_init@2357> enter
<574.110220321:warn:raft-net-test:raft_net_init@2367> exit
<574.110609917:warn:raft-net-test:raft_net_client_user_id_parse@2275> 1a636bd0-d27d-11ea-8cad-90324b2d1e89:2341523123:32452300123:1:0

=================================================================
==21243==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 256 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a4054f5 in regcomp (/lib/x86_64-linux-gnu/libc.so.6+0x1024f5)

Direct leak of 224 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a404ab4 (/lib/x86_64-linux-gnu/libc.so.6+0x101ab4)

Indirect leak of 2048 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743dc6 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10ddc6)
#1 0x7f338a403678 (/lib/x86_64-linux-gnu/libc.so.6+0x100678)

Indirect leak of 1888 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a403b5b (/lib/x86_64-linux-gnu/libc.so.6+0x100b5b)

Indirect leak of 1888 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a403641 (/lib/x86_64-linux-gnu/libc.so.6+0x100641)

Indirect leak of 1888 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a403b6b (/lib/x86_64-linux-gnu/libc.so.6+0x100b6b)

Indirect leak of 1296 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a404476 (/lib/x86_64-linux-gnu/libc.so.6+0x101476)

Indirect leak of 952 byte(s) in 81 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a404556 (/lib/x86_64-linux-gnu/libc.so.6+0x101556)

Indirect leak of 472 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a403b3a (/lib/x86_64-linux-gnu/libc.so.6+0x100b3a)

Indirect leak of 316 byte(s) in 66 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a3f7c69 (/lib/x86_64-linux-gnu/libc.so.6+0xf4c69)

Indirect leak of 256 byte(s) in 8 object(s) allocated from:
#0 0x7f338a743dc6 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10ddc6)
#1 0x7f338a4000ee (/lib/x86_64-linux-gnu/libc.so.6+0xfd0ee)

Indirect leak of 88 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743dc6 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10ddc6)
#1 0x7f338a3f9d93 (/lib/x86_64-linux-gnu/libc.so.6+0xf6d93)

Indirect leak of 64 byte(s) in 8 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a4042fa (/lib/x86_64-linux-gnu/libc.so.6+0x1012fa)

Indirect leak of 64 byte(s) in 16 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a40428a (/lib/x86_64-linux-gnu/libc.so.6+0x10128a)

Indirect leak of 40 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a3f41f4 (/lib/x86_64-linux-gnu/libc.so.6+0xf11f4)
#2 0x6020000053cf ()

Indirect leak of 32 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a3f41f4 (/lib/x86_64-linux-gnu/libc.so.6+0xf11f4)
#2 0x60200000568f ()

Indirect leak of 32 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a3f41f4 (/lib/x86_64-linux-gnu/libc.so.6+0xf11f4)
#2 0x60200000554f ()

Indirect leak of 32 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a3f41f4 (/lib/x86_64-linux-gnu/libc.so.6+0xf11f4)
#2 0x6020000053ef ()

Indirect leak of 32 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a3f41f4 (/lib/x86_64-linux-gnu/libc.so.6+0xf11f4)
#2 0x60200000528f ()

Indirect leak of 16 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743ffe in __interceptor_realloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dffe)
#1 0x7f338a3f2bc3 (/lib/x86_64-linux-gnu/libc.so.6+0xefbc3)

Indirect leak of 4 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a3f2ad2 (/lib/x86_64-linux-gnu/libc.so.6+0xefad2)

Indirect leak of 4 byte(s) in 1 object(s) allocated from:
#0 0x7f338a743bc8 in malloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10dbc8)
#1 0x7f338a3f9dcf (/lib/x86_64-linux-gnu/libc.so.6+0xf6dcf)

SUMMARY: AddressSanitizer: 12348 byte(s) leaked in 206 allocation(s).
FAIL test/raft-net-test (exit status: 1)