src/demux.c: Fix CID #110841

libdvbpsi | branch: master | Jean-Paul Saman <[email protected]> | Sat May 30 17:01:10 2015 +0200| [65ed42a6c5eb90873068941ebb2dbd4b24551c70] | committer: Jean-Paul Saman

src/demux.c: Fix CID #110841

Fix dereference before NULL check.

> http://git.videolan.org/gitweb.cgi/libdvbpsi.git/?a=commit;h=65ed42a6c5eb90873068941ebb2dbd4b24551c70
---

 src/demux.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/demux.c b/src/demux.c
index adbf1e1..5db63a9 100644
--- a/src/demux.c
+++ b/src/demux.c
@@ -220,13 +220,13 @@ void dvbpsi_AttachDemuxSubDecoder(dvbpsi_demux_t *p_demux, dvbpsi_demux_subdec_t
 void dvbpsi_DetachDemuxSubDecoder(dvbpsi_demux_t *p_demux, dvbpsi_demux_subdec_t *p_subdec)
 {
     assert(p_demux);
-    assert(p_demux->p_first_subdec);
-
     assert(p_subdec);
 
     if (!p_demux || !p_subdec)
         abort();
 
+    assert(p_demux->p_first_subdec);
+
     dvbpsi_demux_subdec_t** pp_prev_subdec;
     pp_prev_subdec = &p_demux->p_first_subdec;
     while(*pp_prev_subdec != p_subdec)

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