main/postmarketos-mkinitfs: execute lddtree without privileges (!1133)

The lddtree script uses the scanelf utility which has some security check that causes a slowdown of the operation, executing it without privileges it's really faster.

main/postmarketos-mkinitfs/APKBUILD

@@ -26,4 +26,4 @@ package() {
 
 sha512sums="1d49db8a48ad513cc548b8a0ea23cc64518e71c93863155b4e9d2271fb46090506331c03d6955d693c8568c248ecc76b218efe4a6f6bba57c41c5f6d775dc61b  init.sh.in
 315cc6e8a73f9984e6843395d68734d26ac2fffce34039ec5f229ebcd818bdb353318398d6c824cede5d0b36e13d7589a1f1d3295d8162279b5dc6a2b939da88  init_functions.sh
-02b484122ed5345fd84ccea20d62262aa6bffd775e5f424f24dc4de202705a235a9e1950b5ee8c80f039889fdf6864a798c15382867eed311363835e7b31126a  mkinitfs.sh"
+9a4116832c26e827f5937969ee1ad011e2c45a6e7e74587141cd7de5d192aff0c668913927a5b8bc259ca2c75e429914ef8cb81a05f685944229f07fc48ded18  mkinitfs.sh"

main/postmarketos-mkinitfs/mkinitfs.sh

@@ -129,7 +129,7 @@ get_binaries()
 			BINARIES="${BINARIES} ${line}"
 		done < "$file"
 	done
-	lddtree -l $BINARIES | sort -u
+	sudo -u nobody lddtree -l $BINARIES | sort -u
 }
 
 # Collect non-binary files for osk-sdl and its dependencies
@@ -156,14 +156,13 @@ get_binaries_extra()
 	tmp1=$(mktemp /tmp/mkinitfs.XXXXXX)
 	get_binaries > "$tmp1"
 	tmp2=$(mktemp /tmp/mkinitfs.XXXXXX)
-	lddtree -l $BINARIES_EXTRA | sort -u > "$tmp2"
+	sudo -u nobody lddtree -l $BINARIES_EXTRA | sort -u > "$tmp2"
 	ret=$(comm -13 "$tmp1" "$tmp2")
 	rm "$tmp1" "$tmp2"
 	echo "${ret}"
 }
 
 # Copy files to the destination specified
-# FIXME: this is a performance bottleneck
 # $1: files
 # $2: destination
 copy_files()