user32: Use logical OR not bitwise OR

[Andrew Talbot]

Changelog:
    user32: Use logical OR not bitwise OR.

diff --git a/dlls/user32/menu.c b/dlls/user32/menu.c
index 3a93121..d5b0212 100644
--- a/dlls/user32/menu.c
+++ b/dlls/user32/menu.c
@@ -3122,7 +3122,7 @@ static BOOL MENU_TrackMenu( HMENU hmenu, UINT wFlags, INT x, INT y,
 		     /* the mouse moves. */
 
                     if (hmenu)
-			fEndMenu |= !MENU_MouseMove( &mt, hmenu, wFlags );
+			fEndMenu = fEndMenu || !MENU_MouseMove( &mt, hmenu, wFlags );
 
 	    } /* switch(msg.message) - mouse */
 	}