[TD-225]fix compiler error.

src/client/src/tscFunctionImpl.c

@@ -3699,8 +3699,6 @@ static int32_t twa_function_impl(SQLFunctionCtx* pCtx, int32_t index, int32_t si
         }
 
         pInfo->dOutput += ((val[i] + pInfo->lastValue) / 2) * (primaryKey[i] - pInfo->lastKey);
-//        printf("%ld, %f, val:%f\n", pInfo->lastKey, pInfo->lastValue, pInfo->dOutput);
-
         pInfo->lastValue = val[i];
         pInfo->lastKey = primaryKey[i];
       }
@@ -3714,7 +3712,7 @@ static int32_t twa_function_impl(SQLFunctionCtx* pCtx, int32_t index, int32_t si
         }
 
         pInfo->dOutput += ((val[i] + pInfo->lastValue) / 2) * (primaryKey[i] - pInfo->lastKey);
-        pInfo->lastValue = val[i];
+        pInfo->lastValue = (double) val[i];
         pInfo->lastKey = primaryKey[i];
       }
       break;