autofs-5.0.7 - add null check in extract_version()

From: Ian Kent <raven@themaw.net>

A space should always be found in the passed in string but a check

should be done in case it isn't.

---

 lib/mounts.c |    2 ++

 1 file changed, 2 insertions(+)

diff --git a/lib/mounts.c b/lib/mounts.c

index 0caa0aa..7b959b8 100644

--- a/lib/mounts.c

+++ b/lib/mounts.c

@@ -168,6 +168,8 @@ unsigned int get_kver_minor(void)

 static int extract_version(char *start, struct nfs_mount_vers *vers)

 {

 	char *s_ver = strchr(start, ' ');

+	if (!s_ver)

+		return 0;

 	while (*s_ver && !isdigit(*s_ver)) {

 		s_ver++;

 		if (!*s_ver)