Need to set defaultImage, not image if we're a network image node. (facebookarchive#3041)

Author: garrettmoon

AsyncDisplayKit/ASImageNode+AnimatedImage.mm

@@ -20,6 +20,7 @@
 #import <AsyncDisplayKit/ASImageNode+AnimatedImagePrivate.h>
 #import <AsyncDisplayKit/ASImageProtocols.h>
 #import <AsyncDisplayKit/ASInternalHelpers.h>
+#import <AsyncDisplayKit/ASNetworkImageNode.h>
 #import <AsyncDisplayKit/ASWeakProxy.h>
 
 NSString *const ASAnimatedImageDefaultRunLoopMode = NSRunLoopCommonModes;
@@ -91,6 +92,17 @@ - (void)coverImageCompleted:(UIImage *)coverImage
   }
 
   if (setCoverImage) {
+    [self setCoverImage:coverImage];
+  }
+}
+
+- (void)setCoverImage:(UIImage *)coverImage
+{
+  //If we're a network image node, we want to set the default image so
+  //that it will correctly be restored if it exits the range.
+  if ([self isKindOfClass:[ASNetworkImageNode class]]) {
+    [(ASNetworkImageNode *)self setDefaultImage:coverImage];
+  } else {
     self.image = coverImage;
   }
 }
@@ -172,7 +184,7 @@ - (void)didEnterVisibleState
   [super didEnterVisibleState];
 
   if (self.animatedImage.coverImageReady) {
-    self.image = self.animatedImage.coverImage;
+    [self setCoverImage:self.animatedImage.coverImage];
   }
   [self startAnimating];
 }