Kernel+LibELF: Store termination signal in coredump ProcessInfo

Author: https://github.com/linusg
Commit: 0571a17f57
Pull-request: https://github.com/SerenityOS/serenity/pull/4780

Kernel/CoreDump.cpp

@@ -216,6 +216,7 @@ ByteBuffer CoreDump::create_notes_process_data() const
     ELF::Core::ProcessInfo info {};
     info.header.type = ELF::Core::NotesEntryHeader::Type::ProcessInfo;
     info.pid = m_process->pid().value();
+    info.termination_signal = m_process->termination_signal();
 
     process_data.append((void*)&info, sizeof(info));