fix move operator= function

include/sqlConnection.h

@@ -84,8 +84,7 @@ public:
     
     SqlConnection& operator=(SqlConnection&& other){
         if(this != &other){
-            auto temp = SqlConnection{};
-            temp.Connect(other.ip, other.port, other.username, other.password, other.database_name);
+            this->Connect(other.ip, other.port, other.username, other.password, other.database_name);
             other.Close();
         }
         return *this;