Re-added $ZSH_THEME_GIT_PROMPT_EQUAL_REMOTE

Re-added $ZSH_THEME_GIT_PROMPT_EQUAL_REMOTE variable which was removed in 9f552130

lib/git.zsh

@@ -37,7 +37,9 @@ function git_remote_status() {
         ahead=$(command git rev-list ${hook_com[branch]}@{upstream}..HEAD 2>/dev/null | wc -l)
         behind=$(command git rev-list HEAD..${hook_com[branch]}@{upstream} 2>/dev/null | wc -l)
 
-        if [[ $ahead -gt 0 ]] && [[ $behind -eq 0 ]]; then
+        if [[ $ahead -eq 0 ]] && [[ $behind -eq 0 ]]; then
+            git_remote_status="$ZSH_THEME_GIT_PROMPT_EQUAL_REMOTE"
+        elif [[ $ahead -gt 0 ]] && [[ $behind -eq 0 ]]; then
             git_remote_status="$ZSH_THEME_GIT_PROMPT_AHEAD_REMOTE"
             git_remote_status_detailed="$ZSH_THEME_GIT_PROMPT_AHEAD_REMOTE_COLOR$ZSH_THEME_GIT_PROMPT_AHEAD_REMOTE$((ahead))%{$reset_color%}"
         elif [[ $behind -gt 0 ]] && [[ $ahead -eq 0 ]]; then