[lldb] Convert NativeProcessLinux to new Status API (NFC)

(cherry picked from commit 7b76089)

Author: adrian-prantl

lldb/source/Plugins/Process/Linux/NativeProcessLinux.cpp

@@ -1096,9 +1096,9 @@ Status NativeProcessLinux::Detach() {
 
   for (const auto &thread : m_threads) {
     Status e = Detach(thread->GetID());
+     // Save the error, but still attempt to detach from other threads.
     if (e.Fail())
-      error =
-          e; // Save the error, but still attempt to detach from other threads.
+      error = e.Clone;
   }
 
   m_intel_pt_collector.Clear();
@@ -1908,13 +1908,13 @@ Status NativeProcessLinux::ResumeThread(NativeThreadLinux &thread,
   // reflect it is running after this completes.
   switch (state) {
   case eStateRunning: {
-    const auto resume_result = thread.Resume(signo);
+    Status resume_result = thread.Resume(signo);
     if (resume_result.Success())
       SetState(eStateRunning, true);
     return resume_result;
   }
   case eStateStepping: {
-    const auto step_result = thread.SingleStep(signo);
+    Status step_result = thread.SingleStep(signo);
     if (step_result.Success())
       SetState(eStateRunning, true);
     return step_result;