changes in eval.c

[Richard Stallman]

What is the reason for this change?  I can't figure out the comment.

    --- src/eval.c      19 Aug 2007 01:56:15 -0000      1.286
    +++ src/eval.c      29 Aug 2007 05:27:57 -0000      1.287
    @@ -1280,8 +1280,12 @@
     #if HAVE_X_WINDOWS
       /* If x_catch_errors was done, turn it off now.
          (First we give unbind_to a chance to do that.)  */
    +#if 0 /* This would disable x_catch_errors after x_connection_closed.
    +       * The catch must remain in effect during that delicate
    +       * state. --lorentey  */
       x_fully_uncatch_errors ();
     #endif
    +#endif

Is there code now that runs Lisp code with x_catch_errors in effect?
If so, could you tell me how this happens?