When looking into sys menu, check if items are present before

dereferencing.

When looking into sys menu, check if items are present before
dfed208e · Eric Pouech · Alexandre Julliard · 153334e5 · dfed208e
Commit dfed208e authored Jun 05, 1999 by Eric Pouech Committed by Alexandre Julliard Jun 05, 1999
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menu.c controls/menu.c +1 -1

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--- a/controls/menu.c
+++ b/controls/menu.c
@@ -3766,7 +3766,7 @@ HMENU WINAPI GetSystemMenu( HWND hWnd, BOOL bRevert )
 	    {
 		POPUPMENU *menu = (POPUPMENU*) 
 			   USER_HEAP_LIN_ADDR(wndPtr->hSysMenu);
-		if( menu->items[0].hSubMenu == MENU_DefSysPopup )
+		if( menu->nItems > 0 && menu->items[0].hSubMenu == MENU_DefSysPopup )
 		    menu->items[0].hSubMenu = MENU_CopySysPopup();
 	    }
 	}