lib: Fix various minor bugs

- cmd_make_strvec returns null pointer if str
  begins with a '#'
- disallow options nested options
- NULL out state variable in parser
- flip backwards comparison
- fix memory leak in lexer

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/lib/command_match.c b/lib/command_match.c
index 011ac698cb..9b9f8a0ec5 100644
--- a/lib/command_match.c
+++ b/lib/command_match.c
@@ -158,6 +158,8 @@ match_command (struct graph_node *start,
 static struct list *
 match_command_r (struct graph_node *start, vector vline, unsigned int n)
 {
+  assert (n < vector_active (vline));
+
   // get the minimum match level that can count as a full match
   enum match_type minmatch = min_match_level (start->type);