Remove clang warnings (-Wsign-compare)

sway/layout.c

@@ -393,8 +393,8 @@ static void adjust_border_geometry(swayc_t *c, struct wlc_geometry *g,
 		g->size.h = res->h - g->origin.y + top;
 	}
 
-	g->origin.x = MIN(MAX( g->origin.x - left, 0), res->w);
+	g->origin.x = MIN((uint32_t)MAX(g->origin.x - left, 0), res->w);
-	g->origin.y = MIN(MAX( g->origin.y - top, 0), res->h);
+	g->origin.y = MIN((uint32_t)MAX(g->origin.y - top, 0), res->h);
 
 }