Themes: Fix javascript regression that linter found.

Tests were failing from line length optimizations and double quotes. 

Fixes #37536


git-svn-id: https://develop.svn.wordpress.org/trunk@46310 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-content/themes/twentyfifteen/js/functions.js

@@ -100,16 +100,13 @@
 			sidebarHeight = $sidebar.height(),
 			bodyHeight = $body.height();
 
-		if( 955 < $window.width()
-			&& bodyHeight > sidebarHeight
-			&& ( windowPos + windowHeight ) >= sidebarHeight ) {
-
+		if( 955 < $window.width() && bodyHeight > sidebarHeight && ( windowPos + windowHeight ) >= sidebarHeight ) {
 			$sidebar.css({
-				position: "fixed",
+				position: 'fixed',
 				bottom: sidebarHeight > windowHeight ? 0 : 'auto'
 			});
 		} else {
-			$sidebar.css('position', 'relative')
+			$sidebar.css('position', 'relative');
 		}
 	}