Workaround an assert that leads up to causing a crash on the next time anything tries to CaptureMouse

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@50934 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/src/fl/controlbar.cpp

@@ -726,6 +726,10 @@ void wxFrameLayout::SetBarState( cbBarInfo* pBar, int newState, bool updateNow )
                     mFloatedFrames.Erase( pNode );
 
                     pFFrm->Show( false );
+
+                    // Workaround assert that causes a crash on the next time something tries to CaptureMouse
+                    if (pFFrm->HasCapture()) pFFrm->ReleaseMouse();
+
                     pFFrm->Destroy(); break;
                 }