From: Jaroslav Kysela <perex@perex.cz>
Date: Sat, 2 Apr 2016 08:07:38 +0000 (+0200)
Subject: markdown: fix NULL pointer dereference crash
X-Git-Tag: v4.2.1~759
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0c7b35178c907b52fa2140a6c138a1f910bc1c6;p=thirdparty%2Ftvheadend.git

markdown: fix NULL pointer dereference crash
---

diff --git a/src/webui/doc_md.c b/src/webui/doc_md.c
index d0dacb483..22d20ab39 100644
--- a/src/webui/doc_md.c
+++ b/src/webui/doc_md.c
@@ -146,11 +146,13 @@ http_markdown_class(http_connection_t *hc, const char *clazz)
     md_header(hq, "##", s);
     nl = md_nl(hq, 1);
   }
-  for (; *doc; doc++) {
-    if (*doc[0] == '\xff') {
-      htsbuf_append_str(hq, tvh_gettext_lang(lang, *doc + 1));
-    } else {
-      htsbuf_append_str(hq, *doc);
+  if (doc) {
+    for (; *doc; doc++) {
+      if (*doc[0] == '\xff') {
+        htsbuf_append_str(hq, tvh_gettext_lang(lang, *doc + 1));
+      } else {
+        htsbuf_append_str(hq, *doc);
+      }
     }
   }
   l = htsmsg_get_list(m, "props");