Update MergeJoin.cpp

src/Interpreters/MergeJoin.cpp

@@ -487,7 +487,7 @@ MergeJoin::MergeJoin(std::shared_ptr<TableJoin> table_join_, const Block & right
             left_blocks_buffer = std::make_shared<SortedBlocksBuffer>(left_sort_description, max_bytes);
 }
 
-/// Has to be called event totals is empty
+/// Has to be called even if totals are empty
 void MergeJoin::setTotals(const Block & totals_block)
 {
     totals = totals_block;