TD-6129<feature> fix json encode error

src/common/src/tvariant.c

@@ -167,7 +167,8 @@ void tVariantCreateFromBinary(tVariant *pVar, const char *pz, size_t len, uint32
       
       break;
     }
-    case TSDB_DATA_TYPE_BINARY: {  // todo refactor, extract a method
+    case TSDB_DATA_TYPE_BINARY:
+    case TSDB_DATA_TYPE_JSON:{  // todo refactor, extract a method
       pVar->pz = calloc(len + 1, sizeof(char));
       memcpy(pVar->pz, pz, len);
       pVar->nLen = (int32_t)len;