Declare make_perma_dead and unmake_perma_dead in a shared header file,
so that they can be called from server/resurrection.c without an
implicit function declaration.  This improves compatibility with
future compilers.

Fixed upstream via:

commit 0980e69c30ce0b04cc33d24daa9917c2ee9be665
Author: partmedia <partmedia@282e977c-c81d-0410-88c4-b93c2d0d6712>
Date:   Sun Apr 13 17:27:41 2014 +0000

    Add missing prototypes for permadeath functions.
    
    git-svn-id: svn://svn.code.sf.net/p/crossfire/code/server/trunk@19336 282e97
7c-c81d-0410-88c4-b93c2d0d6712

diff -ur crossfire-server-1.71.0.orig/include/account_char.h crossfire-server-1.71.0/include/account_char.h
--- crossfire-server-1.71.0.orig/include/account_char.h	2014-04-06 00:30:40.000000000 +0200
+++ crossfire-server-1.71.0/include/account_char.h	2023-01-03 16:54:56.152855130 +0100
@@ -36,4 +36,7 @@
     struct account_char_struct  *next;
 } Account_Char;
 
+int make_perma_dead(object *op);
+int unmake_perma_dead(char *account, char *player);
+
 #endif /* OBJECT_H */