core/ncurses: make install does not handle parallell runs

core/ncurses/APKBUILD

@@ -23,16 +23,15 @@ build() {
 	 make -j1 sources
 	 make || return 1
 
-	 make install DESTDIR=$pkgdir/
+	 make -j1 install DESTDIR=$pkgdir/
 }
 
 terminfo() {
-	local orig=$pkgdir
-	pkgdir="$pkgdir-terminfo"
+	subpkgdir="$pkgdir-terminfo"
 	pkgname="Database with info for different terminals"
-	rm -r $pkgdir
-	mkdir -p $pkgdir/usr/share
-	mv $orig/usr/share/terminfo $pkgdir/usr/share
+	rm -rf $subpkgdir
+	mkdir -p $subpkgdir/usr/share
+	mv $pkgdir/usr/share/terminfo $subpkgdir/usr/share
 }
 
 md5sums="b6593abe1089d6aab1551c105c9300e3  ncurses-5.6.tar.gz