[PATCH 4 of 4 STABLE] chg: reset errno prior to calling strtol()

[Augie Fackler]

queued for stable, thanks

> On Nov 2, 2020, at 21:54, Yuya Nishihara <yuya at tcha.org> wrote:
> 
> # HG changeset patch
> # User Yuya Nishihara <yuya at tcha.org>
> # Date 1604370261 -32400
> #      Tue Nov 03 11:24:21 2020 +0900
> # Branch stable
> # Node ID 81da6feb5000140adb8972607415855953415233
> # Parent  9534de20358f656be05e0633a3a2ba59932326f3
> chg: reset errno prior to calling strtol()
> 
> Otherwise we can't figure out if the last strtol() invocation failed or
> not.
> 
> diff --git a/contrib/chg/chg.c b/contrib/chg/chg.c
> --- a/contrib/chg/chg.c
> +++ b/contrib/chg/chg.c
> @@ -276,6 +276,7 @@ static void execcmdserver(const struct c
> 		debugmsg("closing files based on /proc contents");
> 		struct dirent *de;
> 		while ((de = readdir(dp))) {
> +			errno = 0;
> 			char *end;
> 			long fd_value = strtol(de->d_name, &end, 10);
> 			if (end == de->d_name) {
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