Inline `parse_svn` to avoid leaky state

As noted in review, `in_svn` is not properly reset to false. This is better anyway to not leak state.

plugins/svn-fast-info/svn-fast-info.plugin.zsh

@@ -9,7 +9,7 @@
 #
 # *** IMPORTANT *** DO NO USE with the simple svn plugin, this plugin acts as a replacement of it.
 
-function parse_svn() {
+function svn_prompt_info() {
 	info=$(svn info 2>&1) || return; # capture stdout and stdout
 	in_svn=true
 	repo_need_upgrade="$(svn_repo_need_upgrade $info)"
@@ -17,10 +17,6 @@ function parse_svn() {
 	svn_dirty="$(svn_dirty_choose)"
 	svn_repo_name="$(svn_get_repo_name $info)"
 	svn_rev="$(svn_get_revision $info)"
-}
-
-function svn_prompt_info() {
-    eval parse_svn
 
 	if [ ! -z $repo_need_upgrade ]; then
 		echo $ZSH_PROMPT_BASE_COLOR$ZSH_THEME_SVN_PROMPT_PREFIX$ZSH_PROMPT_BASE_COLOR\