Handle null host for secret code

The "host" is the number in the "*#*#NUMBER#*#*" format. It was assumed that it could never be null, but silent crash reports proved it wrong. Repro steps are unknown.

Bug: 63711549
Test: PawSecretCodeListenerTest
PiperOrigin-RevId: 162232903
Change-Id: I15419178099cea7f05c1c9ed5cd595a01ae8db2b
1 file changed
tree: f16cf2481d9ff34da361154f62098313d3e7f689
  1. assets/
  2. java/
  3. Android.mk
  4. AndroidManifest.xml
  5. LICENSE