[redasm-beta] no longer builds

[FabioLolix]

• In the past builded fine
• Other redasm variants (older and newer) are not affected

[ 72%] Building CXX object submodules/loaders/dex/CMakeFiles/DEX.dir/demangler.cpp.o
In file included from /home/fabio/Dev/Github/PKGBUILD/redasm-beta/src/REDasm/LibREDasm/tests/main.cpp:8:
/home/fabio/Dev/Github/PKGBUILD/redasm-beta/src/REDasm/LibREDasm/tests/doctest.h:4032:47: error: size of array 'altStackMem' is not an integral constant-expression
 4032 |         static char             altStackMem[4 * SIGSTKSZ];
      |                                               ^
[ 72%] Building CXX object submodules/plugins/compiler/CMakeFiles/Compiler.dir/msvc/rtti.cpp.o