Work around to get armv7h builds for the Pi4.

pi4/build/build-stormux.sh

@@ -145,7 +145,13 @@ mount "${loopdev}p1" /mnt/boot
 mounted=0
 imageFileName=$(mktemp)
 wget "${url[$imageVersion]}" -O "${imageFileName}"
+if [[ $imageVersion -eq 32 ]]; then
+    # Workaround for bsdtar errors when extracting 32 bit image.
+    set +e
+fi
 bsdtar -xpf "${imageFileName}" -C /mnt
+# Set -e in case it got unset for 32 bit image
+set -e
 arch-chroot /mnt << EOF
 # set up pacman
 pacman-key --init