abuild: fix recursive building

fixes bug introduced with c6b0de32a (abuild: add makedepends_build and
makedepends_host for crosscompile)

abuild.in

@@ -1610,7 +1610,7 @@ builddeps() {
 	[ -z "$recursive" ] && return 1
 
 	# find dependencies that are installed but missing in repo.
-	for i in $deps; do
+	for i in $builddeps; do
 		local m=$($APK search --repository "$abuildrepo" ${i%%[<>=]*})
 		if [ -z "$m" ]; then
 			missing="$missing $i"
@@ -1635,7 +1635,7 @@ builddeps() {
 	done
 	$SUDO_APK add --upgrade --repository "$abuildrepo" \
 		$apk_opt_wait \
-		--virtual .makedepends-$pkgname $deps
+		--virtual .makedepends-$pkgname $builddeps
 }
 
 # replace the md5sums in the APKBUILD