QmlDesigner: Cleanup

Remove trailing whitespace + fix compilation warning.

src/plugins/qmldesigner/components/integration/designdocumentcontroller.cpp

@@ -716,7 +716,6 @@ bool DesignDocumentController::save(QWidget *parent)
     if (!result)
         showError(errorMessage, parent);
     return result;
-    save(centralWidget());
 }
 
 bool DesignDocumentController::save(QIODevice *device, QString * /*errorMessage*/)

src/plugins/qmldesigner/components/integration/designdocumentcontroller.h

@@ -79,9 +79,9 @@ public:
     bool isRedoAvailable() const;
 
     Model *model() const;
-    Model *masterModel() const;    
+    Model *masterModel() const;
 
-    RewriterView *rewriterView() const;    
+    RewriterView *rewriterView() const;
 
     bool isModelSyncBlocked() const;
     void blockModelSync(bool block);