Fix bug in gitstatus.sh. If a file is modified in the index and at the same time in the work tree
Fix bug in gitstatus.sh. If a file is modified in the index and at the
same time in the work tree

$ git status --porcelain
MM tox.ini

✔  22:18 ~/workspace/test [ develop {origin/develop} | ✚ 1 ] $ git status --
On branch develop
Your branch is up-to-date with 'origin/develop'.
Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

	modified:   tox.ini

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

	modified:   tox.ini

tuxinaut/bash-git-prompt,tuxinaut/bash-git-prompt,tuxinaut/bash-git-prompt