avcodec/jpeg2000dec: Clear properties in jpeg2000_dec_cleanup() too

Fixes: Ticket4878
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c980c5e5)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/jpeg2000dec.c

@@ -1809,6 +1809,7 @@ static void jpeg2000_dec_cleanup(Jpeg2000DecoderContext *s)
     av_freep(&s->tile);
     memset(s->codsty, 0, sizeof(s->codsty));
     memset(s->qntsty, 0, sizeof(s->qntsty));
+    memset(s->properties, 0, sizeof(s->properties));
     memset(&s->poc  , 0, sizeof(s->poc));
     s->numXtiles = s->numYtiles = 0;
 }