Revert "Move the dispatch_main_async_safe into internal macros, since it's used in implementation files but not headers"

This reverts commit e702214f82.

SDWebImage/Private/SDInternalMacros.h

@@ -9,15 +9,6 @@
 #import <Foundation/Foundation.h>
 #import "SDmetamacros.h"
 
-#ifndef dispatch_main_async_safe
-#define dispatch_main_async_safe(block)\
-if (dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL) == dispatch_queue_get_label(dispatch_get_main_queue())) {\
-    block();\
-} else {\
-    dispatch_async(dispatch_get_main_queue(), block);\
-}
-#endif
-
 #ifndef SD_LOCK
 #define SD_LOCK(lock) dispatch_semaphore_wait(lock, DISPATCH_TIME_FOREVER);
 #endif

SDWebImage/SDWebImageCompat.h

@@ -84,3 +84,12 @@
 #ifndef NS_OPTIONS
 #define NS_OPTIONS(_type, _name) enum _name : _type _name; enum _name : _type
 #endif
+
+#ifndef dispatch_main_async_safe
+#define dispatch_main_async_safe(block)\
+    if (dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL) == dispatch_queue_get_label(dispatch_get_main_queue())) {\
+        block();\
+    } else {\
+        dispatch_async(dispatch_get_main_queue(), block);\
+    }
+#endif