Fix compilation with namespaced Qt.

src/plugins/qmlinspector/qmlinspector.h

@@ -55,6 +55,7 @@ class ObjectPropertiesView;
 class CanvasFrameRate;
 class ExpressionQueryWidget;
 
+QT_END_NAMESPACE
 
 namespace Qml {
     class EngineSpinBox;
@@ -112,6 +113,4 @@ private:
 
 }
 
-QT_END_NAMESPACE
-
 #endif