Fix a potential invalid memory access in iptobase64.

diff --git a/lib/irc_ipv6.c b/lib/irc_ipv6.c
index ba6817e1a1ceec63a00eb4513a8b53de618f8ea3..1be9d40d85f6bfebcba53a2194645b244122efc2 100644 (file)
--- a/lib/irc_ipv6.c
+++ b/lib/irc_ipv6.c
@@ -440,7 +440,7 @@ const char* iptobase64(char* buf, const struct irc_in_addr* addr, unsigned int c
 
     assert(count >= 25);
     /* Can start by printing out the leading non-zero parts. */
-    for (ii = 0; (addr->in6_16[ii]) && (ii < 8); ++ii) {
+    for (ii = 0; (ii < 8) && (addr->in6_16[ii]); ++ii) {
       inttobase64(output, ntohs(addr->in6_16[ii]), 3);
       output += 3;
     }