MESSENGER-5740 fix double notes rooms on connection erros

bwi/PersonalNotes/PersonalNotesDefaultService.swift

@@ -102,11 +102,19 @@ extension PersonalNotesDefaultService : PersonalNotesService {
     func createPersonalNotesRoomIfNeeded() {
          
         self.fetchRoomID() { (roomId, error) in
-            if let mxerror = error as? MXError {
+            
-                if let errcode = mxerror.userInfo["errcode"] as? String {
+            // bwi #5740 don't create room after connection error that is not translated to mxerror
-                    if errcode != kMXErrCodeStringNotFound {
+            if let error = error {
-                        // request error, don't create room
+                if MXError.isMXError(error) {
-                        return
+                    if let mxError = MXError(nsError: error) {
+                        if let errcode = mxError.userInfo["errcode"] as? String {
+                            if errcode != kMXErrCodeStringNotFound {
+                                // request error, don't create room
+                                return
+                            }
+                        } else {
+                            return
+                        }
                     }
                 } else {
                     return