[ospfd] Fix two debug messages that used inet_ntoa more than once

[ospfd] Fix two debug messages that used inet_ntoa more than once

2007-03-14 Andrew J. Schorr <ajschorr@alumni.princeton.edu>

	* ospf_zebra.c: (ospf_zebra_add, ospf_zebra_delete) Fix bug
	  where inet_ntoa was used twice in the same debug message,
	  which doesn't work because there's a single shared buffer
	  for the returned string.  The fix is to use inet_ntop.