pmos-base: skip failures in devmappings.initd (!164)

Continue even if some kpartx commands fail. This is necessary for the
htc vision and perhaps other devices.

main/postmarketos-base/APKBUILD

 pkgname=postmarketos-base
 pkgver=3
-pkgrel=20
+pkgrel=21
 pkgdesc="Meta package for minimal postmarketOS base"
 url="https://postmarketos.org"
 arch="noarch"
@@ -75,4 +75,4 @@ a525bd9716aff2ded60ae5e6f7c369d73b03d984b09f12e65d32e2fb3f1538ca0e330752b2c55df6
 3ceeee37f558e7c95ad973692b6a437f997e6b46c3d1c2257ddfb1529a5633477373aa123c7f08164e818daae50acb203d151379f27ca11bd458809e6a0d4de7  swapfile
 f5cc0f1265955d2646e5f099dd4b5d4c287945bfc18c16044db57670d456f55c678fc11cc59e6dab3fa340832ce869d516302a3a35c13518539ed0cedca51819  swapfile.init
 e0d2d48b82a03239a4c0a00acaf83e00d397c23a8d7c71053d4e2a383357c22dcedef9e81b0e12a1d7514e1fdbe0bb3eb82613d18b29034a7ce5447f13c84a53  swapfile.conf
-aa93a0e664354bbcfdfc7dc35fdbf5f31d5e8866d0d8e5c2374e9e87fa146e7afc45294d6eabb4d7b5f28bca608e0366ebbc8d1677a8746677d5075c1d44610d  devmappings.initd"
+dadd251229eb5759e3cba77c39a4afc6f28bcbe0f272cd3ab41b7ff4fe6a3d2b9ee765e1a0b8f9241274e757ed3b2ce035ee5abe91843e55fb4188a3c401ca78  devmappings.initd"

main/postmarketos-base/devmappings.initd

@@ -15,7 +15,11 @@ start()
                 case "$(kpartx -l "$partition" 2>/dev/null | wc -l)" in
                         2)
                                 einfo "Mount subpartitions of $partition"
-                                kpartx -afs "$partition"
+                                # On some devices (e. g. htc vision) this kpartx command can fail
+                                # with a non-zero exit code on some unrelated partitions, which would
+                                # normally cause the loop to abort. But we still need to find the
+                                # root partition, hence the "|| continue"
+                                kpartx -afs "$partition" || continue
                                 # Ensure that this was the *correct* subpartition
                                 # Some devices have mmc partitions that appear to have
                                 # subpartitions, but aren't our subpartition.