Call completions immediately if the previous WebViewController was deallocated because the iPad was rotated. Issue #1757

iOS/Article/ImageTransition.swift

@@ -93,12 +93,17 @@ class ImageTransition: NSObject, UIViewControllerAnimatedTransitioning {
 			animations: {
 				imageView.frame = self.originFrame
 			}, completion: { _ in
-				self.webViewController?.showClickedImage() {
+				if let controller = self.webViewController {
+					controller.showClickedImage() {
 						DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
 							imageView.removeFromSuperview()
 							transitionContext.completeTransition(true)
 						}
 					}
+				} else {
+					imageView.removeFromSuperview()
+					transitionContext.completeTransition(true)
+				}
 		})
 	}