tools: enable linting for benchmarks

PR-URL: https://github.com/nodejs/node/pull/5517
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Makefile

@@ -578,8 +578,8 @@ bench-idle:
 	$(NODE) benchmark/idle_clients.js &
 
 jslint:
-	$(NODE) tools/eslint/bin/eslint.js lib src test tools/doc tools/eslint-rules \
-		--rulesdir tools/eslint-rules
+	$(NODE) tools/eslint/bin/eslint.js benchmark lib src test tools/doc \
+	  tools/eslint-rules --rulesdir tools/eslint-rules
 
 CPPLINT_EXCLUDE ?=
 CPPLINT_EXCLUDE += src/node_lttng.cc

vcbuild.bat

@@ -259,7 +259,7 @@ goto jslint
 :jslint
 if not defined jslint goto exit
 echo running jslint
-%config%\node tools\eslint\bin\eslint.js lib src test tools\doc tools\eslint-rules --rulesdir tools\eslint-rules
+%config%\node tools\eslint\bin\eslint.js benchmark lib src test tools\doc tools\eslint-rules --rulesdir tools\eslint-rules
 goto exit
 
 :create-msvs-files-failed