core: irc, xfer: do not check return code of res_init()

If the call to res_init() fails, the connection may be OK anyway
or in worst case it will fail (with an appropriate error) if the name
can not be resolved.

src/core/wee-network.c

@@ -313,8 +313,7 @@ network_resolve (const char *hostname, char *ip, int *version)
 
     res = NULL;
 
-    if (res_init() != 0)
-	return 0;
+    res_init ();
 
     if (getaddrinfo (hostname, NULL, NULL, &res) != 0)
         return 0;
@@ -701,8 +700,7 @@ network_connect_to (const char *proxy, struct sockaddr *address,
         hints.ai_flags = AI_NUMERICSERV;
         snprintf (str_port, sizeof (str_port), "%d",
                  CONFIG_INTEGER(ptr_proxy->options[PROXY_OPTION_PORT]));
-	if (res_init() != 0)
-            goto error;
+        res_init ();
         if (getaddrinfo (CONFIG_STRING(ptr_proxy->options[PROXY_OPTION_ADDRESS]),
                          str_port, &hints, &proxy_addrinfo) != 0)
         {
@@ -813,8 +811,8 @@ network_connect_child (struct t_hook *hook_connect)
 #ifdef AI_ADDRCONFIG
     hints.ai_flags = AI_ADDRCONFIG;
 #endif /* AI_ADDRCONFIG */
-    rc = res_init();
-    if (!rc && ptr_proxy)
+    res_init ();
+    if (ptr_proxy)
     {
         hints.ai_family = (CONFIG_BOOLEAN(ptr_proxy->options[PROXY_OPTION_IPV6])) ?
             AF_UNSPEC : AF_INET;

src/plugins/irc/irc-server.c

@@ -5134,8 +5134,8 @@ irc_server_xfer_send_ready_cb (const void *pointer, void *data,
                                                          "local_address");
                 if (local_address)
                 {
-		    if ((rc = res_init()) == 0)
-			rc = getaddrinfo (local_address, NULL, NULL, &ainfo);
+                    res_init ();
+                    rc = getaddrinfo (local_address, NULL, NULL, &ainfo);
                     if ((rc == 0) && ainfo && ainfo->ai_addr)
                     {
                         if (ainfo->ai_family == AF_INET)

src/plugins/xfer/xfer.c

@@ -968,8 +968,7 @@ xfer_resolve_addr (const char *str_address, const char *str_port,
     hints.ai_addr = NULL;
     hints.ai_next = NULL;
 
-    if (res_init() != 0)
-        return 0;
+    res_init ();
     rc = getaddrinfo (str_address, str_port, &hints, &ainfo);
     if ((rc == 0) && ainfo && ainfo->ai_addr)
     {