Fix linux compile. Thanks to click, hunshijie and tomkuzyno for spotting the culprits.

--HG--
branch : trunk

src/server/shared/Database/MySQLConnection.h

@@ -53,6 +53,11 @@ struct MySQLConnectionInfo
     std::string database;
     std::string host;
     std::string port_or_socket;
+
+    void ChangeHost(const std::string& newHost) /// Needed for unix socket case
+    {
+        host = newHost;
+    }
 };
 
 class MySQLConnection