2005-03-13 Andrew J. Schorr <ajschorr@alumni.princeton.edu>

2005-03-13 Andrew J. Schorr <ajschorr@alumni.princeton.edu>

	* ospf_lsa.c: (ospf_lsa_refresh_walker) If the system clock jumps
	  backward, then current time may be less than
	  ospf->lsa_refresher_started.  This was causing invalid values
	  for ospf->lsa_refresh_queue.index resulting in infinite loops.
	  Problem fixed by casting the expression to unsigned before taking
	  the modulus.

	[backport candidate]