Core/Mysql: Multiple changes

- added support for setting NULL column values to MySQL wrapper in core
- replaced nonstandard strdup function and manual memory management with std::string
- fixed bug in MySQLPreparedStatement::getQueryString method, it failed when string parameter contained embedded '?' symbols
- fixed memory leak in MySQLPreparedStatement::setString method

1 files changed, 1 insertions, 1 deletions

diff --git a/src/server/game/Globals/ObjectMgr.cpp b/src/server/game/Globals/ObjectMgr.cpp
index 642b301bc59..32c6ffeb153 100644
--- a/src/server/game/Globals/ObjectMgr.cpp
+++ b/src/server/game/Globals/ObjectMgr.cpp
@@ -8198,7 +8198,7 @@ void ObjectMgr::AddVendorItem(uint32 entry, uint32 item, int32 maxcount, uint32
 
     if (persist)
     {
-        PreparedStatement* stmt = WorldDatabase.GetPreparedStatement(WORLD_INS_NPC_VENODR);
+        PreparedStatement* stmt = WorldDatabase.GetPreparedStatement(WORLD_INS_NPC_VENDOR);
 
         stmt->setUInt32(0, entry);
         stmt->setUInt32(1, item);