Remove the no file check in the error highlighting logic

Author: Bozhidar Batsov

cider-interaction.el

@@ -1114,19 +1114,16 @@ If location could not be found, return nil."
                (line (nth 1 info))
                (col (nth 2 info)))
            (save-excursion
-             ;; when we don't have a filename or it's different from the one of
-             ;; the current buffer, the line number is relative to form start
-             (if (and file (equal (file-truename file)
-                                  (file-truename (buffer-file-name))))
-                 (goto-char (point-min)) ; start of file
-               (beginning-of-defun))
-             (forward-line (1- line))
-             (move-to-column (or col 0))
-             (let ((begin (progn (if col (cider--goto-expression-start) (back-to-indentation))
-                                 (point)))
-                   (end (progn (if col (forward-list) (move-end-of-line nil))
-                               (point))))
-               (cons begin end)))))))))
+             (save-restriction
+               (widen)
+               (goto-char (point-min))
+               (forward-line (1- line))
+               (move-to-column (or col 0))
+               (let ((begin (progn (if col (cider--goto-expression-start) (back-to-indentation))
+                                   (point)))
+                     (end (progn (if col (forward-list) (move-end-of-line nil))
+                                 (point))))
+                 (cons begin end))))))))))
 
 (defun cider-highlight-compilation-errors (buffer message)
   "Highlight compilation error line in BUFFER, using MESSAGE."