Fix room creation check.

Signed-off-by: Ivan Sein <ivan@nextcloud.com>

VideoCalls/RoomCreation2TableViewController.m

@@ -247,7 +247,10 @@ NSString * const NCRoomCreatedNotification  = @"NCRoomCreatedNotification";
         NSUInteger newLength = [textField.text length] + [string length] - range.length;
         BOOL hasAllowedLength = newLength <= 200;
         // Enable/Disable create button
-        _createRoomButton.enabled = newLength > 0 && hasAllowedLength;
+        if (hasAllowedLength) {
+            NSString *roomName = [[textField.text stringByReplacingCharactersInRange:range withString:string] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+            _createRoomButton.enabled = roomName.length > 0;
+        }
         return hasAllowedLength;
     }
     return YES;

VideoCalls/RoomsTableViewController.m

@@ -848,7 +848,7 @@ typedef void (^FetchRoomsCompletionBlock)(BOOL success);
         BOOL hasAllowedLength = newLength <= 200;
         // Enable/Disable rename button
         if (hasAllowedLength) {
-            NSString * newRoomName = [[textField.text stringByReplacingCharactersInRange:range withString:string] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
+            NSString *newRoomName = [[textField.text stringByReplacingCharactersInRange:range withString:string] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
             _confirmAction.enabled = (newRoomName.length > 0) && ![_renamimgRoomName isEqualToString:newRoomName];
         }
         return hasAllowedLength;