Merge pull request #7763 from jasonmolenda/shut-down-exception-thread-when-clearing

[lldb] [debugserver] Shut down the exception thread when clearing (llvm#70979)

Author: jasonmolenda

lldb/tools/debugserver/source/MacOSX/MachTask.mm

@@ -145,6 +145,8 @@
 //----------------------------------------------------------------------
 void MachTask::Clear() {
   // Do any cleanup needed for this task
+  if (m_exception_thread)
+    ShutDownExcecptionThread();
   m_task = TASK_NULL;
   m_exception_thread = 0;
   m_exception_port = MACH_PORT_NULL;