make scanfill threadsafe (wasnt threadsafe before BMesh merge but before the merge it didn't need to be) - now rendering uses its better if its threadsafe.

source/creator/creator.c

@@ -59,7 +59,6 @@
 
 #include "BLI_args.h"
 #include "BLI_threads.h"
-#include "BLI_scanfill.h" /* for BLI_setErrorCallBack, TODO, move elsewhere */
 #include "BLI_utildefines.h"
 #include "BLI_callbacks.h"
 
@@ -103,6 +102,8 @@
 #include "GPU_draw.h"
 #include "GPU_extensions.h"
 
+#include "BLI_scanfill.h" /* for BLI_setErrorCallBack, TODO, move elsewhere */
+
 #ifdef WITH_BUILDINFO_HEADER
 #define BUILD_DATE
 #endif