Add messageId null check in persistIfRequired.

Bug: 65421518

Test: Build Android with change and verify that SendRequest does not
crash when a pdu confirmation is received from the carrier after sending
an MMS from non-default messaging app.

Change-Id: Ibf141e4674b528f9c4811df6e04abac16296d108
1 file changed
tree: a175d19a67ecc3126636a1af0fb6efef97687e32
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml
  5. OWNERS
  6. proguard.flags