IP address control: don't try to DNS resolve

* This is used when configuring the DNS client, so resolving will not
  work
* It is supposed to be a control for entering IPs, not domain names.

Fixes #12464.

src/preferences/network/IPAddressControl.cpp

@@ -78,7 +78,8 @@ IPAddressControl::_UpdateMark()
 	}
 
 	BNetworkAddress address;
-	bool success = address.SetTo(fFamily, Text()) == B_OK;
+	bool success = address.SetTo(fFamily, Text(), (char*)NULL,
+		B_NO_ADDRESS_RESOLUTION) == B_OK;
 
 	MarkAsInvalid(!success);
 }