Merge branch 'ep/maint-equals-null-cocci' for maint-2.35

* ep/maint-equals-null-cocci:
  tree-wide: apply equals-null.cocci
  contrib/coccinnelle: add equals-null.cocci

object-file.c

@@ -1712,7 +1712,7 @@ void *read_object_file_extended(struct repository *r,
 		die(_("loose object %s (stored in %s) is corrupt"),
 		    oid_to_hex(repl), path);
 
-	if ((p = has_packed_and_bad(r, repl)) != NULL)
+	if ((p = has_packed_and_bad(r, repl)))
 		die(_("packed object %s (stored in %s) is corrupt"),
 		    oid_to_hex(repl), p->pack_name);
 	obj_read_unlock();