add FIXME for util_image->file_path

include/util_image.h

@@ -13,6 +13,8 @@ struct util_image
 	int32 num_channels;
 	uint data_len;
 	uint8* pixels;
+	// FIXME: should use a pointer here, and just add the length of file_path
+	// 	onto the allocation for util_image
 	char file_path[256];
 };