Bug 1236991 - fix trailing whitespace, rs=bustage,whitespace-only-change, DONTBUILD

MozReview-Commit-ID: 9J7oKa636UX

--HG--
extra : rebase_source : 7300467808098a3a234474ab8eb411e6c24b2ac9

toolkit/components/tooltiptext/tests/browser_bug581947.js

@@ -4,7 +4,7 @@ function check(aBrowser, aElementName, aBarred, aType) {
     let e = content.document.createElement(aElementName);
     let contentElement = content.document.getElementById('content');
     contentElement.appendChild(e);
-    
+
     if (aType) {
       e.type = aType;
     }