[CI] Fix _GUID define impact make openal (#748)

libs/openal/openal.c

@@ -1,5 +1,6 @@
 #define HL_NAME(n) openal_##n
 #include <hl.h>
+#undef _GUID
 
 #if defined(__APPLE__) && !defined(openal_soft)
 	#include <OpenAL/al.h>