Clobber unneeded prototypes; in particular, the redeclaration of malloc()

will break compilation if DESTDIR is not set. The update.c module is
actually from the Sun RPC distribution so this is really their bogon, but
I should have noticed it when I integrated the code into rpc.ypupdated.

Sung to me by: Satoshi

usr.sbin/rpc.ypupdated/update.c

@@ -64,11 +64,15 @@ static	char sccsid[] = "@(#)update.c 1.2 91/03/11 Copyr 1986 Sun Micro";
 #define	YPOP_STORE  4			/* add, or change */
 #endif
 
+#ifdef notdef
 extern char *getpass();
 extern char *malloc();
+#endif
 
 #ifdef YP
+#ifdef notdef
 static char *basename();
+#endif
 static char SHELL[] = "/bin/sh";
 static char YPDBPATH[]="/var/yp";	/* This is defined but not used! */
 static char PKMAP[] = "publickey.byname";