Merge "Fix NPE in DialerCall that cause it crash and failed to show disconnection error message." am: 5d01ebb84a am: e2eb24bd29

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Dialer/+/1671906

Change-Id: I9c4c827c492b5ad148e0fe99b812bca2be053613