[Bug Fix] Fix miscellaneous memory leaks related to EQApplicationPacket and it's pBuffer (#2262)

* Delete EQApplicationPacket after use

* Correct issue where Creating EQApplicationPackets in zone/mob.cpp may not free pBuffer[]

* Handle freeing pBuffer[] if exists in zone/mob.cpp Create*Packet functions

* Handle freeing pBuffer[] in zone/object.cpp Create*Packet methods

* Delete leaked outapp variables in zone/trading.cpp

* Make CreateHorseSpawnPacket() safer by freeing pBuffer[] before replacing with new[]

* Prevent initial new ServerPacket from being leaked in command_reload

* Free pack after sending in command_setlsinfo

* Delete new NPC in command_viewnpctype after printing stats

* Fix compile error

* Delete EQApplicationPacket after sending in command_kick

* Remove unneeded safe_delete(outapp) after FastQueuePacket and fix minor whitespace issue

* Delete packet after sending in WorldServer::SendReloadTasks

* Cleanup logic and free leaked NPCType in Client::Doppelganger

* Free RespawnOption in Client::HandleRespawnFromHover in 'unexpected rez from hover request' branch

* Free EQApplicationPacket after sending in Bot::ProcessBotInspectionRequest

* Free Bot when returning from failed Bot::Save() in helper_bot_create()

* Initialize variable to nullptr to prevent garbage initial value

* Undo change in other PR

zone/horse.cpp

@@ -174,6 +174,7 @@ void Client::SetHorseId(uint16 horseid_in) {
 
 void Mob::CreateHorseSpawnPacket(EQApplicationPacket* app, const char* ownername, uint16 ownerid, Mob* ForWho) {
 	app->SetOpcode(OP_NewSpawn);
+	safe_delete_array(app->pBuffer);
 	app->pBuffer = new uchar[sizeof(NewSpawn_Struct)];
 	app->size = sizeof(NewSpawn_Struct);
 	memset(app->pBuffer, 0, sizeof(NewSpawn_Struct));