fix incoming changes in git prompt

powerlevel9k.zsh-theme

@@ -1644,7 +1644,7 @@ function _p9k_vcs_render() {
   [[ $VCS_STATUS_RESULT == ok-* ]] || return 1
 
   (( ${POWERLEVEL9K_VCS_GIT_HOOKS[(I)git-untracked]} )) || VCS_STATUS_HAS_UNTRACKED=0
-  (( ${POWERLEVEL9K_VCS_GIT_HOOKS[(I)git-aheadbehind]} )) || VCS_STATUS_COMMITS_AHEAD=0 && VCS_STATUS_COMMITS_BEHIND=0
+  (( ${POWERLEVEL9K_VCS_GIT_HOOKS[(I)git-aheadbehind]} )) || { VCS_STATUS_COMMITS_AHEAD=0 && VCS_STATUS_COMMITS_BEHIND=0 }
   (( ${POWERLEVEL9K_VCS_GIT_HOOKS[(I)git-stash]} )) || VCS_STATUS_STASHES=0
   (( ${POWERLEVEL9K_VCS_GIT_HOOKS[(I)git-remotebranch]} )) || VCS_STATUS_REMOTE_BRANCH=""
   (( ${POWERLEVEL9K_VCS_GIT_HOOKS[(I)git-tagname]} )) || VCS_STATUS_TAG=""