userspace/wrs_version: fix segault wiht incorrect sdb

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

userspace/wrs_version: fix segault wiht incorrect sdb
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
d1751295 · Alessandro Rubini · e730efe5 · d1751295
Commit d1751295 authored Oct 01, 2014 by Alessandro Rubini
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wrs_version.c userspace/tools/wrs_version.c +2 -0

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--- a/userspace/tools/wrs_version.c
+++ b/userspace/tools/wrs_version.c
@@ -135,6 +135,8 @@ static char *sdb_get(char *fname, char *tagname)
 	}
 	/* Look for the tag */
 	s = strstr(buf, tagname);
+	if (!s)
+		return unknown;
 	sscanf(s, "%*[^:]:%*c%[^\n]", result);
 	return result;
 }