testing/nbtscan: build fix for aarch64 and ppc64le

testing/nbtscan/APKBUILD

@@ -16,6 +16,11 @@ options="!check"
 
 builddir="$srcdir/$pkgname-${pkgver}a"
 
+prepare() {
+	update_config_guess
+	default_prepare
+}
+
 build() {
 	cd "$builddir"
 	./configure --prefix=/usr