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env: Don't match empty variable name in env_match()

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Do we really allow zero-length variable name? I guess not.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Marek Behún 2021-10-17 17:36:33 +02:00 committed by Simon Glass
parent d1bca8d2a1
commit 6ba4473fb7
1 changed files with 1 additions and 1 deletions
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2
cmd/nvedit.c
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@ -708,7 +708,7 @@ char *from_env(const char *envvar)
static const char *env_match(const char *p, const char *s1)
{
if (s1 == NULL)
if (s1 == NULL || *s1 == '\0')
return NULL;
while (*s1 == *p++)