Fix missing prototype for InterlockedXXcrement64

src/libvlc.c

@@ -152,9 +152,9 @@ void *vlc_hold (gc_object_t * p_gc)
 #if defined (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
     refs = __sync_add_and_fetch (&p_gc->refs, 1);
 #elif defined (WIN32) && defined (__GNUC__)
-    refs = __builtin_choose_expr (sizeof (uintptr_t) == 4,
-               InterlockedIncrement (&p_gc->refs),
-               InterlockedIncrement64 (&p_gc->refs));
+    refs = InterlockedIncrement (&p_gc->refs);
+#elif defined (WIN64) && defined (__GNUC__)
+    refs = InterlockedIncrement64 (&p_gc->refs);
 #elif defined(__APPLE__)
     refs = OSAtomicIncrement32Barrier((int*)&p_gc->refs);
 #else
@@ -179,9 +179,9 @@ void vlc_release (gc_object_t *p_gc)
 #if defined (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4)
     refs = __sync_sub_and_fetch (&p_gc->refs, 1);
 #elif defined (WIN32) && defined (__GNUC__)
-    refs = __builtin_choose_expr (sizeof (uintptr_t) == 4,
-               InterlockedDecrement (&p_gc->refs),
-               InterlockedDecrement64 (&p_gc->refs));
+    refs = InterlockedDecrement (&p_gc->refs);
+#elif defined (WIN64) && defined (__GNUC__)
+    refs = InterlockedDecrement64 (&p_gc->refs);
 #elif defined(__APPLE__)
     refs = OSAtomicDecrement32Barrier((int*)&p_gc->refs);
 #else