dsound: Don't copy the position notify on duplicate.

dlls/dsound/buffer.c

@@ -1214,6 +1214,8 @@ HRESULT IDirectSoundBufferImpl_Duplicate(
     dsb->state = STATE_STOPPED;
     dsb->buf_mixpos = dsb->sec_mixpos = 0;
     dsb->notify = NULL;
+    dsb->notifies = NULL;
+    dsb->nrofnotifies = 0;
     dsb->device = device;
     dsb->ds3db = NULL;
     dsb->iks = NULL; /* FIXME? */

dlls/dsound/tests/dsound.c

@@ -1063,12 +1063,7 @@ static HRESULT test_notify(LPDIRECTSOUNDBUFFER dsb,
         return rc;
 
     ret=WaitForMultipleObjects(count,event,FALSE,0);
-    if (expected != WAIT_OBJECT_0+1) {
-        todo_wine
-        ok(ret==expected,"expected %d. got %d\n",expected,ret);
-    }
-    else
-        ok(ret==expected,"expected %d. got %d\n",expected,ret);
+    ok(ret==expected,"expected %d. got %d\n",expected,ret);
     return rc;
 }