* src/alloc.c: call only non-null finalizers

diff --git a/src/alloc.c b/src/alloc.c
index 41b2f9e77d20ccf0465e463ef4782659cc3f5955..8dae6bffbd9abc031e4f05e9e8a2edb2627f6d69 100644 (file)
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -6907,7 +6907,8 @@ sweep_misc (void)
              else if (mblk->markers[i].m.u_any.type == Lisp_Misc_User_Ptr)
                {
                  struct Lisp_User_Ptr *uptr = &mblk->markers[i].m.u_user_ptr;
-                 uptr->finalizer (uptr->p);
+                 if (uptr->finalizer)
+                   uptr->finalizer (uptr->p);
                }
 #endif
               /* Set the type of the freed object to Lisp_Misc_Free.