[CLEANUP] Remove unneeded chars allocation

Some arrays used to log addresses add some more bytes for ports but this space
is never used.
diff --git a/src/log.c b/src/log.c
index 9e26967..d1387b5 100644
--- a/src/log.c
+++ b/src/log.c
@@ -318,7 +318,7 @@
  */
 void tcp_sess_log(struct session *s)
 {
-	char pn[INET6_ADDRSTRLEN + strlen(":65535")];
+	char pn[INET6_ADDRSTRLEN];
 	struct proxy *fe = s->fe;
 	struct proxy *be = s->be;
 	struct proxy *prx_log;