doom: Clear origin pointer when stopping sound.

When an mobj_t is freed, any currently-playing sounds attached to that
object are stopped, but the sound code was leaving a dangling pointer
to the freed mobj_t that was flagged by the -zonescan checks.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/doom/s_sound.c b/src/doom/s_sound.c
index f6d8be13..5834650d 100644
--- a/src/doom/s_sound.c
+++ b/src/doom/s_sound.c
@@ -174,11 +174,12 @@ static void S_StopChannel(int cnum)
                 break;
             }
         }
-        
+
         // degrade usefulness of sound data
 
         c->sfxinfo->usefulness--;
         c->sfxinfo = NULL;
+        c->origin = NULL;
     }
 }