Indentation fix

Fixed intentaion (tabs -> spaces)
Added trailing newline

Author: Sogomn

src/librustdoc/html/static/main.js

@@ -258,7 +258,7 @@
                 addClass(search, "hidden");
                 removeClass(document.getElementById("main"), "hidden");
             }
-			defocusSearchBar();
+            defocusSearchBar();
             break;
 
         case "s":
@@ -1889,4 +1889,4 @@ function focusSearchBar() {
 // Removes the focus from the search bar
 function defocusSearchBar() {
     document.getElementsByClassName('search-input')[0].blur();
-}
+}