D29370.diff
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	diff --git a/usr.sbin/services_mkdb/uniq.c b/usr.sbin/services_mkdb/uniq.c
	--- a/usr.sbin/services_mkdb/uniq.c
	+++ b/usr.sbin/services_mkdb/uniq.c
	@@ -120,12 +120,13 @@
	for (p = (const unsigned char )origline; l && p && isspace(*p);
	p++, l--)
	continue;
	+ if (*p == '\0' \|\| l == 0)
	+ return 0;
	+
	if ((cline = malloc(l + 1)) == NULL)
	err(1, "Cannot allocate %zu bytes", l + 1);
	(void)memcpy(cline, p, l);
	cline[l] = '\0';
	- if (*cline == '\0')
	- return 0;

	complen = 0;
	hasalnum = 0;
	@@ -155,6 +156,11 @@
	--complen;
	}
	*q = '\0';
	+ if (!hasalnum) {
	+ free(cline);
	+ cline = NULL;
	+ complen = 0;
	+ }
	*compline = cline;
	*len = complen;
	return hasalnum;