From: Jodie Cunningham <jodie.cunningham@gmail.com>
Date: Fri, 26 Dec 2014 16:07:21 +0000 (-0600)
Subject: fix header-only file crash, fixes #67
X-Git-Url: https://git.danieliu.xyz/?a=commitdiff_plain;h=f6eba201ce1ec4118d501ff7afa547324143c9b9;p=smdp.git

fix header-only file crash, fixes #67
---

diff --git a/src/markdown.c b/src/markdown.c
index 05c77be..8471724 100644
--- a/src/markdown.c
+++ b/src/markdown.c
@@ -81,6 +81,8 @@ void free_deck(deck_t *deck) {
     while (slide) {
         free_line(slide->line);
         next = slide->next;
+        if (slide == NULL)
+            return;
         free(slide);
         slide = next;
     }