Fix for missing WINAPI_FAMILY_PARTITION

This is macro identifier is not defined, define it to `0`.

include/share/compat.h

@@ -175,6 +175,10 @@
 #define flac_fstat fstat
 #endif
 
+#ifndef WINAPI_FAMILY_PARTITION
+#define WINAPI_FAMILY_PARTITION(x) 0
+#endif
+
 #ifdef ANDROID
 #include <limits.h>
 #endif

src/libFLAC/windows_unicode_filenames.c

@@ -34,6 +34,7 @@
 #endif
 
 #include <io.h>
+#include "share/compat.h"
 #include "share/windows_unicode_filenames.h"
 
 /* convert UTF-8 back to WCHAR. Caller is responsible for freeing memory */