main/libtls-standalone: fix cross-compiling

main/libtls-standalone/APKBUILD

@@ -8,7 +8,8 @@ url="http://www.libressl.org/"
 arch="all"
 license="ISC"
 depends_dev="openssl-dev"
-makedepends="libbsd-dev openssl-dev"
+makedepends_build=""
+makedepends_host="libbsd-dev openssl-dev"
 subpackages="$pkgname-dbg $pkgname-dev $pkgname-doc"
 source="https://ftp.openbsd.org/pub/OpenBSD/libressl/libressl-$pkgver.tar.gz
 	Makefile