comctl32: Ensure that toolbar respond only to changes in WM_CAPTURECHANGED handler.

Signed-off-by: Christopher Thielen <cthielen@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/comctl32/toolbar.c

@@ -6807,6 +6807,7 @@ ToolbarWindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 	    return TOOLBAR_MouseLeave (infoPtr);
 
 	case WM_CAPTURECHANGED:
+	    if (hwnd == (HWND)lParam) return 0;
 	    return TOOLBAR_CaptureChanged(infoPtr);
 
 	case WM_NCACTIVATE: