Fix for INET 00/0

This seems like the reasonable fix for this problem, and I am going to
apply it.  Any comments?

---------------------------------------------------------------------------


Index: src/backend/utils/adt/inet_net_ntop.c
===================================================================
RCS file: /usr/local/cvsroot/pgsql/src/backend/utils/adt/inet_net_ntop.c,v
retrieving revision 1.4
diff -c -r1.4 inet_net_ntop.c
*** src/backend/utils/adt/inet_net_ntop.c    1999/01/01 04:17:13    1.4
--- src/backend/utils/adt/inet_net_ntop.c    1999/05/25 05:17:40
***************
*** 207,213 ****      /* Format whole octets plus nonzero trailing octets. */     tb = (bits == 32) ? 31 : bits;
!     for (b = 0; b <= (tb / 8) || (b < len && *src != 0); b++)     {         if (size < sizeof "255.")
gotoemsgsize;
 
--- 207,213 ----      /* Format whole octets plus nonzero trailing octets. */     tb = (bits == 32) ? 31 : bits;
!     for (b = 0; bits != 0 && (b <= (tb / 8) || (b < len && *src != 0)); b++)     {         if (size < sizeof "255.")
          goto emsgsize;
 

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