Fix problem with re-allocation of serverarray.

src/dnsmasq.h

@@ -1103,7 +1103,7 @@ extern struct daemon {
   struct iname *if_names, *if_addrs, *if_except, *dhcp_except, *auth_peers, *tftp_interfaces;
   struct bogus_addr *bogus_addr, *ignore_addr;
   struct server *servers, *local_domains, **serverarray, *no_rebind;
-  int serverarraysz;
+  int serverarraysz, serverarrayhwm;
   struct ipsets *ipsets;
   u32 allowlist_mask;
   struct allowlist *allowlists;

src/domain-match.c

@@ -36,18 +36,22 @@ void build_server_array(void)
   
   for (serv = daemon->local_domains; serv; serv = serv->next)
     count++;
-  
-  if (count > daemon->serverarraysz)
+
+  daemon->serverarraysz = count;
+
+  if (count > daemon->serverarrayhwm)
     {
       struct server **new;
 
+      count += 10; /* A few extra without re-allocating. */
+
       if ((new = whine_malloc(count * sizeof(struct server *))))
 	{
 	  if (daemon->serverarray)
 	    free(daemon->serverarray);
 	  
 	  daemon->serverarray = new;
-	  daemon->serverarraysz = count;
+	  daemon->serverarrayhwm = count;
 	}
     }
 

src/option.c

@@ -935,8 +935,7 @@ char *parse_server(char *arg, union mysockaddr *addr, union mysockaddr *source_a
 static int domain_rev4(char *domain, struct in_addr addr, int msize)
 {
   in_addr_t a = ntohl(addr.s_addr);
-  char *p;
-
+ 
   *domain = 0;
   
   switch (msize)