Add const, from Andrew Abartlet <abartlet@samba.org>

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@15506 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/roken/base64.c

@@ -39,13 +39,13 @@ RCSID("$Id$");
 #include <string.h>
 #include "base64.h"
 
-static char base64_chars[] = 
+static const char base64_chars[] = 
     "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
 
 static int 
 pos(char c)
 {
-    char *p;
+    const char *p;
     for (p = base64_chars; *p; p++)
 	if (*p == c)
 	    return p - base64_chars;