archbuild: abort if update or creation of the chroot fails

archbuild.in

@@ -61,13 +61,13 @@ if ${clean_first} || [[ ! -d "${chroots}/${repo}-${arch}" ]]; then
 		-C "@pkgdatadir@/pacman-${repo}.conf" \
 		-M "@pkgdatadir@/makepkg-${arch}.conf" \
 		"${chroots}/${repo}-${arch}/root" \
-		"${base_packages[@]}"
+		"${base_packages[@]}" || abort
 else
 	setarch ${arch} mkarchroot \
 		-u \
 		-C "@pkgdatadir@/pacman-${repo}.conf" \
 		-M "@pkgdatadir@/makepkg-${arch}.conf" \
-		"${chroots}/${repo}-${arch}/root"
+		"${chroots}/${repo}-${arch}/root" || abort
 fi
 
 msg "Building in chroot for [${repo}] (${arch})..."