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ucm: handle empty string also for ${env:} substitution

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2022-11-22 09:59:04 +01:00
parent 8b64f22459
commit 9649b64c6f
1 changed files with 7 additions and 1 deletions
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8
src/ucm/ucm_subs.c
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@ -490,7 +490,13 @@ static char *rval_env(snd_use_case_mgr_t *uc_mgr ATTRIBUTE_UNUSED, const char *i
{
char *e;
e = getenv(id);
if (*id == '-') {
e = getenv(id + 1);
if (e == NULL)
e = "";
} else {
e = getenv(id);
}
if (e)
return strdup(e);
return NULL;