From: Fletcher T. Penney <fletcher@fletcherpenney.net>
Date: Tue, 14 Mar 2017 22:44:41 +0000 (-0400)
Subject: FIXED: Fix NULL pointer dereference
X-Git-Tag: 6.0.0-rc1^2~15
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6eda50d349c501fc3bf92578b6be99cb8314f5f0;p=multimarkdown

FIXED: Fix NULL pointer dereference
---

diff --git a/Sources/libMultiMarkdown/writer.c b/Sources/libMultiMarkdown/writer.c
index 69261b3..997d578 100644
--- a/Sources/libMultiMarkdown/writer.c
+++ b/Sources/libMultiMarkdown/writer.c
@@ -1349,7 +1349,7 @@ token * manual_label_from_header(token * h, const char * source) {
 				break;
 			case PAIR_BRACKET:
 				label = walker;
-				while(walker->type == PAIR_BRACKET) {
+				while(walker && walker->type == PAIR_BRACKET) {
 					walker = walker->prev;
 					count++;
 				}