main/*: use tabs consistently

main/alsa-lib/APKBUILD

@@ -13,8 +13,8 @@ source="https://alsa-project.org/files/pub/lib/alsa-lib-$pkgver.tar.bz2
 	fix-PATH_MAX-on-ppc64le.patch
 	"
 prepare() {
-        default_prepare
-        update_config_sub
+	default_prepare
+	update_config_sub
 }
 
 build() {

main/alsa-utils/APKBUILD

@@ -19,8 +19,8 @@ source="https://alsa-project.org/files/pub/utils/alsa-utils-$pkgver.tar.bz2
 	musl-types.patch
 	"
 prepare() {
-        default_prepare
-        update_config_sub
+	default_prepare
+	update_config_sub
 }
 
 build() {

main/gmp/APKBUILD

@@ -17,7 +17,7 @@ replaces="gmp5"
 
 # lto is not available during bootstrap
 if [ -z "$BOOTSTRAP" ]; then
-        _lto_cflags="-flto=auto"
+	_lto_cflags="-flto=auto"
 fi
 
 prepare() {

main/popt/APKBUILD

@@ -11,8 +11,8 @@ subpackages="$pkgname-doc $pkgname-static $pkgname-dev"
 source="http://ftp.rpm.org/popt/releases/popt-${pkgver%.*}.x/popt-$pkgver.tar.gz"
 
 prepare() {
-        default_prepare
-        update_config_sub
+	default_prepare
+	update_config_sub
 }
 
 build() {