[CP] fix a clerical error when declare ObPlanBaseKeyGuard

src/sql/ob_sql.cpp

@@ -2268,7 +2268,7 @@ int ObSql::generate_physical_plan(ParseResult &parse_result,
   stmt_ora_need_privs.need_privs_.set_allocator(&allocator);
   uint64_t aggregate_setting = 0;
   // TODO: @linlin.xll remove ori_bl_key after eval_udf use identical sql ctx.
-  ObPlanBaseKeyGuard(sql_ctx.spm_ctx_.bl_key_);
+  ObPlanBaseKeyGuard guard(sql_ctx.spm_ctx_.bl_key_);
   _LOG_DEBUG("start to generate physical plan for query.(query = %.*s)",
               parse_result.input_sql_len_, parse_result.input_sql_);
   if (OB_FAIL(sanity_check(sql_ctx))) { //check sql_ctx.session_info_ and sql_ctx.schema_guard_