entropy should be unsigned

include/lutil.h

@@ -52,7 +52,7 @@ lutil_detach LDAP_P((
 /* entropy.c */
 LDAP_LUTIL_F( int )
 lutil_entropy LDAP_P((
-	char *buf,
+	unsigned char *buf,
 	ber_len_t nbytes ));
 
 /* passwd.c */

libraries/liblutil/entropy.c

@@ -34,7 +34,7 @@
  * This routinue should be extended to support additional sources
  * of entropy.
  */
-int lutil_entropy( char *buf, ber_len_t nbytes )
+int lutil_entropy( unsigned char *buf, ber_len_t nbytes )
 {
 	if( nbytes == 0 ) return 0;