Fix setImage clownyness

Reviewed By: mmmulani

Differential Revision: D3785608

fbshipit-source-id: eab547ae2724efde5aeb3855ab15610875d63dcd

Libraries/Image/RCTImageView.m

@@ -109,7 +109,7 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
 - (void)updateWithImage:(UIImage *)image
 {
   if (!image) {
-    self.image = nil;
+    super.image = nil;
     return;
   }