emacs git-gutter showing linum instead of symbols

gistfile1.el

(defun git-gutter:view-set-overlays (diffinfos)
  (save-excursion
    (goto-char (point-min))
    (cl-loop with curline = 1
             for info in diffinfos
             for start-line = (plist-get info :start-line)
             for end-line = (plist-get info :end-line)
             for type = (plist-get info :type)
             do
             (progn
               (forward-line (- start-line curline))
               (cl-case type
                 ((modified added)
                  (setq curline start-line)
                  (while (and (<= curline end-line) (not (eobp)))
                    (git-gutter:view-at-pos (propertize (format "%5d" curline) 'face (git-gutter:select-face type)) (point))
                    (cl-incf curline)
                    (forward-line 1)))
                 (deleted
                  (git-gutter:view-at-pos (propertize (format "%5d" curline) 'face (git-gutter:select-face type)) (point))
                  (forward-line 1)
                  (setq curline (1+ end-line))))))))
                  
; make sure there's room for the linum
(setq git-gutter:window-width 5)