test for either Ctrl or Shift in MSWShouldPreProcessMessage() instead of Ctrl twice (#9620)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@54399 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/listctrl.cpp

@@ -1756,7 +1756,7 @@ bool wxListCtrl::MSWShouldPreProcessMessage(WXMSG* msg)
             // We need VK_RETURN to generate wxEVT_COMMAND_LIST_ITEM_ACTIVATED,
             // but only if none of the modifiers is down.  We'll let normal
             // accelerators handle those.
-            if ( !wxIsCtrlDown() && !wxIsCtrlDown() &&
+            if ( !wxIsCtrlDown() && !wxIsShiftDown() &&
                  !((HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN))
             return false;
         }