Fixed hotkeys being unregistered when changing tabs. Fixes #883

MacPass/MPIntegrationPreferencesController.m

@@ -82,10 +82,14 @@
 }
 
 - (void)willShowTab {
+  if(!_hotKey) {
     _hotKey = [DDHotKey hotKeyWithKeyData:[NSUserDefaults.standardUserDefaults dataForKey:kMPSettingsKeyGlobalAutotypeKeyDataKey]];
-  /* Change any invalid hotkeys to valid ones? */
+  }
+  /* Only call the setter if the hotkeys are different, otherwise the dealloc call will unregister them*/
+  if(![self.hotKeyTextField.hotKey isEqual:self.hotKey]) {
     self.hotKeyTextField.hotKey = self.hotKey;
   }
+}
 
 #pragma mark -
 #pragma mark Properties