fs: change var to let

PR-URL: #30407 Reviewed-By: Сковорода Никита Андреевич <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]>

Author: alvarp

lib/internal/fs/streams.js

@@ -360,7 +360,7 @@ WriteStream.prototype._writev = function(data, cb){
 constchunks=newArray(len);
 letsize=0;
 
-for(vari=0;i<len;i++){
+for(leti=0;i<len;i++){
 constchunk=data[i].chunk;
 
 chunks[i]=chunk;