Fix security/scrypt for sparc64 (and presumably other base-gcc archs)

I used this (without the COMPILER_LANGS line) to fix scrypt in the current
sparc64 build. I saw I should have used COMPILER_LANGS too after the fact.

--Kurt

Index: Makefile
===================================================================
RCS file: /cvs/ports/security/scrypt/Makefile,v
retrieving revision 1.10
diff -u -p -r1.10 Makefile
--- Makefile 31 Dec 2019 07:26:59 -0000 1.10
+++ Makefile 1 Jan 2020 17:46:23 -0000
@@ -18,6 +18,9 @@ WANTLIB = c crypto
MASTER_SITES = ${HOMEPAGE}
EXTRACT_SUFX = .tgz

+COMPILER = base-clang ports-gcc base-gcc
+COMPILER_LANGS = c
+
CONFIGURE_STYLE = gnu
CONFIGURE_ARGS = --enable-libscrypt-kdf