Use wxWindow::ReleaseMouse() instead of MSW ::ReleaseCapture() function.

As we capture the mouse using wxWindow::CaptureMouse(), we must release it
with ReleaseMouse() and not just ReleaseCapture().

Closes #11791.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63628 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/tglbtn.cpp

@@ -187,7 +187,7 @@ void wxBitmapToggleButton::OnMouse(wxMouseEvent &event)
 
         if (event.LeftUp())
         {
-            ReleaseCapture();
+            ReleaseMouse();
             m_capturing = false;
             if (mouse_in)
             {