Fix Mac crash-on-quit when timed infobar is up.

common/eda_base_frame.cpp

@@ -219,6 +219,10 @@ void EDA_BASE_FRAME::windowClosing( wxCloseEvent& event )
     if( canCloseWindow( event ) )
     {
         m_isClosing = true;
+
+        if( m_infoBar )
+            m_infoBar->Dismiss();
+
         APP_SETTINGS_BASE* cfg = config();
 
         if( cfg )

common/widgets/wx_infobar.cpp

@@ -63,7 +63,7 @@ WX_INFOBAR::WX_INFOBAR( wxWindow* aParent, wxAuiManager* aMgr, wxWindowID aWinid
 
     // Infobar is broken on Mac without the effects
     SetShowHideEffects( wxSHOW_EFFECT_ROLL_TO_BOTTOM, wxSHOW_EFFECT_ROLL_TO_TOP );
-    SetEffectDuration( 300 );
+    SetEffectDuration( 200 );
 #else
     // Infobar freezes canvas on Windows with the effect, and GTK looks bad with it
     SetShowHideEffects( wxSHOW_EFFECT_NONE, wxSHOW_EFFECT_NONE );