fix:use wrong variables

tests/test/c/sml_test.c

@@ -348,16 +348,16 @@ int sml_16384_Test() {
   pRes = taos_query(taos, "use sml_db");
   taos_free_result(pRes);
 
-  TAOS_RES *res = taos_schemaless_insert(taos, (char **)sql, 1, TSDB_SML_LINE_PROTOCOL, 0);
+  pRes = taos_schemaless_insert(taos, (char **)sql, 1, TSDB_SML_LINE_PROTOCOL, 0);
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
   int code = taos_errno(pRes);
-  taos_free_result(res);
+  taos_free_result(pRes);
   if(code) return code;
 
   const char *sql1[] = {
       "qelhxo,id=pnnqhsa,t0=t,t1=127i8 c0=f,c1=127i8,c11=L\"ncharColValue\",c10=t 1626006833639000000",
   };
-  TAOS_RES *res1 = taos_schemaless_insert(taos, (char **)sql1, 1, TSDB_SML_LINE_PROTOCOL, 0);
+  pRes = taos_schemaless_insert(taos, (char **)sql1, 1, TSDB_SML_LINE_PROTOCOL, 0);
   printf("%s result:%s\n", __FUNCTION__, taos_errstr(pRes));
   code = taos_errno(pRes);
   taos_free_result(pRes);