libfetch: unbreak build (#1779).

srcpkgs/libfetch/template

@@ -1,7 +1,7 @@
 # Template file for 'libfetch'
 pkgname=libfetch
 version=2.34
-revision=9
+revision=10
 build_style=gnu-makefile
 makedepends="libressl-devel"
 short_desc="File Transfer Library for URLs"
@@ -11,6 +11,10 @@ license="Modified BSD"
 distfiles="http://repo.voidlinux.eu/distfiles/${pkgname}-${version}.tar.xz"
 checksum=4e6d4541f213c9ab42ea94d49c2573f0a6f54b04f14668530960f1424b04f722
 
+do_build() {
+	make CC=$CC
+}
+
 libfetch-devel_package() {
 	depends="${makedepends} ${sourcepkg}>=${version}_${revision}"
 	short_desc+=" - development files"