Merge branch 'sd/prompt-local-variable'

Code clean-up.

* sd/prompt-local-variable:
  git-prompt.sh: localize `option` in __git_ps1_show_upstream

contrib/completion/git-prompt.sh

@@ -138,6 +138,7 @@ __git_ps1_show_upstream ()
 	done <<< "$output"
 
 	# parse configuration values
+	local option
 	for option in ${GIT_PS1_SHOWUPSTREAM}; do
 		case "$option" in
 		git|svn) upstream="$option" ;;