VCS_INFO_get_data_git produces output in git-annex directories

[Nils Steinger <zsh-list@xxxxxxxxxx>]

Hi,

I'm using oh-my-zsh and noticed that whenever I changed into a directory
containing a git-annex repository, "fatal: This operation must be run in
a work tree" appeared above my shell prompt.
After unsuccessfully grep-ing the oh-my-zsh sources for a command that
could cause this output, I 'set -x' and found that the error message was
caused by line 119 in
/usr/share/zsh/functions/VCS_Info/Backends/VCS_INFO_get_data_git.

I assume that's accidental (since it's useless and annoying) and have
attached a patch to fix this behavior.

Nils

--- /usr/share/zsh/functions/VCS_Info/Backends/VCS_INFO_get_data_git.old    2014-03-10 18:16:33.514629788 +0000
+++ /usr/share/zsh/functions/VCS_Info/Backends/VCS_INFO_get_data_git    2014-03-10 18:15:54.919823850 +0000
@@ -116,7 +116,7 @@
    [[ "$(${vcs_comm[cmd]} rev-parse --is-inside-git-dir 2> /dev/null)" != 'true' ]] && \
    ${vcs_comm[cmd]} rev-parse --quiet --verify HEAD &> /dev/null ; then
     # Default: off - these are potentially expensive on big repositories
-    ${vcs_comm[cmd]} diff --no-ext-diff --ignore-submodules --quiet --exit-code ||
+    ${vcs_comm[cmd]} diff --no-ext-diff --ignore-submodules --quiet --exit-code &> /dev/null ||
         gitunstaged=1
     ${vcs_comm[cmd]} diff-index --cached --quiet --ignore-submodules HEAD 2> /dev/null
     (( $? && $? != 128 )) && gitstaged=1