ntp: Fix buildworld with MK_OPENSSL=no

Reported by:	wosch
Tested by:	wosch
MFC after:	1 week

usr.sbin/ntp/Makefile.inc

@@ -9,7 +9,7 @@ NTPDEFS=   -DSYS_FREEBSD
 CFLAGS+= ${NTPDEFS} ${DEFS_LOCAL} ${CLOCKDEFS}
 
 .if ${MK_OPENSSL} != "no"
-CFLAGS+= -DOPENSSL -DAUTOKEY
+CFLAGS+= -DOPENSSL -DAUTOKEY -DUSE_OPENSSL_CRYPTO_RAND
 .endif
 
 WARNS?=	0

usr.sbin/ntp/config.h

@@ -1664,7 +1664,8 @@ typedef unsigned int	uintptr_t;
 #define USE_FSETOWNCTTY 1
 
 /* Use OpenSSL's crypto random functions */
-#define USE_OPENSSL_CRYPTO_RAND 1
+/* We define this in Makefile.inc instead */
+/* #undef USE_OPENSSL_CRYPTO_RAND */
 
 /* OK to use snprintb()? */
 /* #undef USE_SNPRINTB */