diff -up pidgin-2.9.0/libpurple/conversation.c.dupfix pidgin-2.9.0/libpurple/conversation.c
--- pidgin-2.9.0/libpurple/conversation.c	cd6817f4863abafef969359f65cc025f9483b401
+++ pidgin-2.9.0/libpurple/conversation.c	19aac10ceebae1ee28788b6f0c02bcfcff0c8803
@@ -1978,7 +1978,6 @@ purple_conv_chat_clear_users(PurpleConvC
 	}
 
 	g_hash_table_remove_all(chat->users);
-	chat->users = NULL;
 
 	g_list_free(users);
 	chat->in_room = NULL;