message: [NFC] Use llvm_unreachable instead of lldb::assert
  Summary: Fixes implicit fall through warnings
  Reviewers: JDevlieghere, teemperor
  Subscribers: lldb-commits
diff: @@ -526,7 +526,7 @@ int Editline::GetCharacter(EditLineGetCharType *c) {
  break;
  case lldb::eConnectionStatusInterrupted:
  - lldbassert(0 && "Interrupts should have been handled above.");
  + llvm_unreachable("Interrupts should have been handled above.");
  case lldb::eConnectionStatusError: // Check GetError() for details
  case lldb::eConnectionStatusTimedOut: // Request timed out
  