SonarCloud: try to appease it better

src/lib/ares_init.c

@@ -2064,15 +2064,20 @@ static ares_status_t config_sortlist(struct apattern **sortlist, size_t *nsort,
   while (*str && *str != ';')
     {
       int bits;
-      char ipbuf[16], ipbufpfx[32];
+      char ipbuf[17], ipbufpfx[32];
+      size_t len;
+
       /* Find just the IP */
       q = str;
       while (*q && *q != '/' && *q != ';' && !ISSPACE(*q))
         q++;
-      if (q-str >= 16)
+
+      len = (size_t)(q-str);
+      if (len >= sizeof(ipbuf)-1)
         return ARES_EBADSTR;
-      memcpy(ipbuf, str, (size_t)(q-str));
+      memcpy(ipbuf, str, len);
-      ipbuf[q-str] = '\0';
+      ipbuf[len] = '\0';
+
       /* Find the prefix */
       if (*q == '/')
         {
@@ -2120,10 +2125,12 @@ static ares_status_t config_sortlist(struct apattern **sortlist, size_t *nsort,
         {
           if (ipbufpfx[0])
             {
-              if (q-str >= 16)
+              len = (size_t)(q-str);
+              if (len >= sizeof(ipbuf)-1)
                 return ARES_EBADSTR;
-              memcpy(ipbuf, str, (size_t)(q-str));
+              memcpy(ipbuf, str, len);
-              ipbuf[q-str] = '\0';
+              ipbuf[len] = '\0';
+
               if (ip_addr(ipbuf, q-str, &pat.mask.addr4) != 0)
                 natural_mask(&pat);
             }

src/lib/ares_process.c

@@ -1040,7 +1040,7 @@ static int configure_socket(ares_socket_t s, int family, ares_channel channel)
     }
   }
   else if (family == AF_INET6) {
-    if (memcmp(channel->local_ip6, &ares_in6addr_any,
+    if (memcmp(channel->local_ip6, ares_in6addr_any._S6_un._S6_u8,
                sizeof(channel->local_ip6)) != 0) {
       memset(&local.sa6, 0, sizeof(local.sa6));
       local.sa6.sin6_family = AF_INET6;