Guard against blank .git file

Let's see you break it now.
2012-03-20 08:16:45 -04:00 · 2012-03-20 08:16:45 -04:00 · bc3ffa6b44
commit bc3ffa6b44
parent 8ecc9b9e11
1 changed files with 1 additions and 1 deletions
--- a/plugin/fugitive.vim
+++ b/plugin/fugitive.vim
@ -118,7 +118,7 @@ function! fugitive#extract_git_dir(path) abort
    elseif type ==# 'link' && fugitive#is_git_dir(dir)
      return resolve(dir)
    elseif type !=# '' && filereadable(dir)
-      let line = readfile(dir, 1)[0]
+      let line = get(readfile(dir, 1), 0, '')
      if line =~# '^gitdir: ' && fugitive#is_git_dir(line[8:-1])
        return line[8:-1]
      endif