live_edit: don't highlight lines when ctrl key is pressed.

When user press the ctrl key, then part magnetic effect is always enabled.
it was introduced from missing return function value...

@fix T3741

src/bin/live_edit.c

@@ -1693,7 +1693,7 @@ calc_layout_auto_align_pos(Evas_Object *layout, live_data *ld, int x, int y,
      {
         *ret_x = x;
         *ret_y = y;
-        return;
+        return 0;
      }
 
    Eina_Bool is_up, is_down, is_left, is_right;