[FFmpeg-cvslog] lavf/ftp: fix possible crash

[Lukasz Marek]

ffmpeg | branch: release/2.0 | Lukasz Marek <lukasz.m.luki at gmail.com> | Thu Aug 29 01:54:04 2013 +0200| [0cabb95811f9618f0f02fe20cd9d4b99a42e244b] | committer: Michael Niedermayer

lavf/ftp: fix possible crash
(cherry picked from commit f3ace37a3b8c93218630a37b7df4dc195f1215a9)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0cabb95811f9618f0f02fe20cd9d4b99a42e244b
---

 libavformat/ftp.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/ftp.c b/libavformat/ftp.c
index 6358726..572d4b4 100644
--- a/libavformat/ftp.c
+++ b/libavformat/ftp.c
@@ -133,7 +133,8 @@ static int ftp_status(FTPContext *s, char **line, const int response_codes[])
 
     while (!code_found || dash) {
         if ((err = ftp_get_line(s, buf, sizeof(buf))) < 0) {
-            av_bprint_finalize(&line_buffer, NULL);
+            if (line)
+                av_bprint_finalize(&line_buffer, NULL);
             return err;
         }