remove false-positive warning for int comparison as bool

Reported by Prathu Baronia <prathu.baronia@praton.me>, patch slightly changed.

Thanks!

dmenu.c

@@ -652,7 +652,7 @@ setup(void)
 		/* no focused window is on screen, so use pointer location instead */
 		if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
 			for (i = 0; i < n; i++)
-				if (INTERSECT(x, y, 1, 1, info[i]))
+				if (INTERSECT(x, y, 1, 1, info[i]) != 0)
 					break;
 
 		x = info[i].x_org;