Make sure that if query is null code still works

Fix for following issue:
ERROR [karma]: [TypeError: Cannot read property 'x-ua-compatible' of null]
TypeError: Cannot read property 'x-ua-compatible' of null
    at getXUACompatibleMetaElement (d:\sz\start-template\sjaa-sandbox\node_modules\karma\lib\middleware\karma.js:40:19)
    at d:\sz\start-template\sjaa-sandbox\node_modules\karma\lib\middleware\karma.js:145:45
    at d:\sz\start-template\sjaa-sandbox\node_modules\karma\lib\middleware\common.js:65:35
    at fs.js:295:14
    at d:\sz\start-template\sjaa-sandbox\node_modules\karma\node_modules\graceful-fs\graceful-fs.js:104:5
    at Object.oncomplete (fs.js:93:15)