Merge pull request #5113 from overleaf/em-compile-error-link

Fix compile error link in TeX Live 2021

GitOrigin-RevId: d1193e638d6f41c2b8045350b16296c42944ff0c

services/web/frontend/js/ide/pdf/controllers/PdfController.js

@@ -762,8 +762,10 @@ App.controller(
       path = path.replace(/^\/compile\//, '')
 
       const rootDocDirname = ide.fileTreeManager.getRootDocDirname()
-      if (rootDocDirname != null) {
+      if (rootDocDirname) {
         path = path.replace(/^\.\//, rootDocDirname + '/')
+      } else {
+        path = path.replace(/^\.\//, '')
       }
 
       return path