LookupServer: Move into LookupServer namespace

Author: https://github.com/bugaevc
Commit: 314f966745
Pull-request: https://github.com/SerenityOS/serenity/pull/5238
Reviewed-by: https://github.com/alimpfard

Userland/Services/LookupServer/DNSAnswer.cpp

@@ -27,6 +27,8 @@
 #include "DNSAnswer.h"
 #include <time.h>
 
+namespace LookupServer {
+
 DNSAnswer::DNSAnswer(const String& name, u16 type, u16 class_code, u32 ttl, const String& record_data)
     : m_name(name)
     , m_type(type)
@@ -44,3 +46,5 @@ bool DNSAnswer::has_expired() const
 {
     return time(nullptr) >= m_expiration_time;
 }
+
+}