Fix handling of URLs in SAE.

SignalShareExtension/ShareViewController.swift

@@ -698,7 +698,11 @@ public class ShareViewController: UIViewController, ShareViewDelegate, SAEFailed
         }
 
         // See comments on NSItemProvider+OWS.h.
+        if srcUtiType == kUTTypeURL as String {
+            itemProvider.loadItem(forTypeIdentifier: srcUtiType, options: nil, completionHandler: loadCompletion)
+        } else {
             itemProvider.loadData(forTypeIdentifier: srcUtiType, options: nil, completionHandler: loadCompletion)
+        }
 
         return promise.then { [weak self] (itemUrl: URL, utiType: String) -> Promise<SignalAttachment> in
             guard let strongSelf = self else {