many functions in blender are not marked static but should be.

most local modifier,GPU,ImBuf and Interface functions are now static.

also fixed an error were the fluid modifier definition and the header didnt have the same number of args.

source/blender/modifiers/intern/MOD_hook.c

@@ -46,6 +46,7 @@
 #include "depsgraph_private.h"
 #include "MEM_guardedalloc.h"
 
+#include "MOD_util.h"
 
 static void initData(ModifierData *md) 
 {