[GLUTEN-1682] [CH] fix hasNext will always be true if input is empty (f…

…acebookincubator#1683)

What changes were proposed in this pull request?
This pr fix that if the current block is empty, it should return false for hasNext.

(Fixes: facebookincubator#1682)

How was this patch tested?
This patch was tested manually.

cpp-ch/local-engine/Parser/SerializedPlanParser.cpp

@@ -2702,7 +2702,9 @@ bool LocalExecutor::checkAndSetDefaultBlock(size_t current_block_columns, bool h
         const DB::ColumnWithTypeAndName default_col(default_col_ptr, col_type, col_name);
         currentBlock().setColumn(i, default_col);
     }
-    return true;
+    if (cols.size() > 0)
+        return true;
+    return false;
 }
 
 }