Merge branch 'working'

stb_vorbis.c

@@ -553,12 +553,14 @@ enum STBVorbisError
    #include <string.h>
    #include <assert.h>
    #include <math.h>
-#if !(defined(__APPLE__) || defined(MACOSX) || defined(macintosh) || defined(Macintosh))
+
+   // find definition of alloca if it's not in stdlib.h:
+   #ifdef _MSC_VER
       #include <malloc.h>
+   #endif
    #if defined(__linux__) || defined(__linux) || defined(__EMSCRIPTEN__)
       #include <alloca.h>
    #endif
-#endif
 #else // STB_VORBIS_NO_CRT
    #define NULL 0
    #define malloc(s)   0