unused variable warning when !wxMAC_USE_NATIVE_TOOLBAR

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35142 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/toolbar.cpp

@@ -572,13 +572,14 @@ wxToolBar::~wxToolBar()
 
 bool wxToolBar::Show( bool show )
 {
-    bool bResult, ownToolbarInstalled = false;
+    bool bResult;
     WindowRef tlw = MAC_WXHWND(MacGetTopLevelWindowRef());
 
     bResult = (tlw != NULL);
     if (bResult)
     {
 #if wxMAC_USE_NATIVE_TOOLBAR
+        bool ownToolbarInstalled = false;
         MacTopLevelHasNativeToolbar( &ownToolbarInstalled );
         if (ownToolbarInstalled)
         {