Merge pull request #1983 from dreampiggy/fix_webp_import_issue

Fix SDWebImage v4 can not import libwebp framework's header files.

@@ -13,7 +13,7 @@
 #if __has_include(<FLAnimatedImage/FLAnimatedImage.h>)
 #import <FLAnimatedImage/FLAnimatedImage.h>
 #else
-#import "FLAnimatedImageView.h"
+#import "FLAnimatedImage.h"
 #endif
 
 #import "SDWebImageManager.h"

@@ -13,7 +13,6 @@
 #import "UIView+WebCacheOperation.h"
 #import "UIView+WebCache.h"
 #import "NSData+ImageContentType.h"
-#import "FLAnimatedImage.h"
 #import "UIImageView+WebCache.h"
 
 @implementation FLAnimatedImageView (WebCache)

@@ -9,10 +9,17 @@
 #ifdef SD_WEBP
 
 #import "UIImage+WebP.h"
+#import "NSImage+WebCache.h"
+
+#if __has_include(<webp/decode.h>) && __has_include(<webp/mux_types.h>) && __has_include(<webp/demux.h>)
+#import <webp/decode.h>
+#import <webp/mux_types.h>
+#import <webp/demux.h>
+#else
 #import "webp/decode.h"
 #import "webp/mux_types.h"
 #import "webp/demux.h"
-#import "NSImage+WebCache.h"
+#endif
 
 #import "objc/runtime.h"