minor: Fix shadowed declarations

src/devices/flex.c

@@ -14,9 +14,9 @@
 #include "fatal.h"
 #include <stdlib.h>
 
-static inline int bit(const uint8_t *bytes, unsigned bit)
+static inline int bit(const uint8_t *bytes, unsigned b)
 {
-    return bytes[bit >> 3] >> (7 - (bit & 7)) & 1;
+    return bytes[b >> 3] >> (7 - (b & 7)) & 1;
 }
 
 /// extract all mask bits skipping unmasked bits of a number up to 32/64 bits

src/devices/ge_coloreffects.c

@@ -19,9 +19,9 @@ Previous work decoding this device:
 #include "decoder.h"
 
 // Helper to access single bit (copied from bitbuffer.c)
-static inline int bit(const uint8_t *bytes, unsigned bit)
+static inline int bit(const uint8_t *bytes, unsigned b)
 {
-    return bytes[bit >> 3] >> (7 - (bit & 7)) & 1;
+    return bytes[b >> 3] >> (7 - (b & 7)) & 1;
 }
 
 /**

src/devices/norgo.c

@@ -88,15 +88,15 @@ static uint16_t const checksum_taps[] = {
 static uint16_t next_mask(uint32_t mask)
 {
     uint16_t i;
-    uint16_t next_mask;
+    uint16_t n_mask;
 
-    next_mask = mask >> 1;
+    n_mask = mask >> 1;
     for (i = 0; i < 15; i++) {
         if (mask & (1 << i)) {
-            next_mask ^= checksum_taps[i];
+            n_mask ^= checksum_taps[i];
         }
     }
-    return next_mask;
+    return n_mask;
 }
 
 static uint8_t calc_checksum(uint8_t *data, uint8_t datalen)