Update jshint.js for left undefined error.

|| /usr/lib/node_modules/jshint/src/stable/jshint.js:3580
|| 				throw err;
|| 				      ^
|| TypeError: Cannot read property 'id' of undefined
||     at Object.x.led (/usr/lib/node_modules/jshint/src/stable/jshint.js:1110:26)
||     at expression (/usr/lib/node_modules/jshint/src/stable/jshint.js:839:31)
||     at Object.blockstmt.labelled [as fud] (/usr/lib/node_modules/jshint/src/stable/jshint.js:2983:7)
||     at expression (/usr/lib/node_modules/jshint/src/stable/jshint.js:798:29)
||     at statement (/usr/lib/node_modules/jshint/src/stable/jshint.js:1391:7)
||     at statements (/usr/lib/node_modules/jshint/src/stable/jshint.js:1444:12)
||     at block (/usr/lib/node_modules/jshint/src/stable/jshint.js:1566:9)
||     at Object.oldScope [as fud] (/usr/lib/node_modules/jshint/src/stable/jshint.js:2686:3)
||     at expression (/usr/lib/node_modules/jshint/src/stable/jshint.js:798:29)
||     at statement (/usr/lib/node_modules/jshint/src/stable/jshint.js:1391:7)