core_whowas Store time added in WhoWas::Nick

include/commands/cmd_whowas.h

@@ -40,6 +40,14 @@ namespace WhoWas
 		 */
 		whowas_set entries;
 
+		/** Time this nick was added to the database
+		 */
+		const time_t addtime;
+
+		/** Constructor to initialize fields
+		 */
+		Nick();
+
 		/** Destructor, deallocates all elements in the entries container
 		 */
 		~Nick();

src/coremods/core_whowas.cpp

@@ -209,6 +209,11 @@ WhoWasGroup::WhoWasGroup(User* user) : host(user->host), dhost(user->dhost), ide
 {
 }
 
+WhoWas::Nick::Nick()
+	: addtime(ServerInstance->Time())
+{
+}
+
 WhoWas::Nick::~Nick()
 {
 	stdalgo::delete_all(entries);