[lldb][NFC] Move lock scope where it should begin

lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp

@@ -2349,21 +2349,22 @@ void ProcessGDBRemote::RefreshStateAfterStop() {
 
   m_thread_ids.clear();
   m_thread_pcs.clear();
+
   // Set the thread stop info. It might have a "threads" key whose value is a
   // list of all thread IDs in the current process, so m_thread_ids might get
   // set.
-
-  // Scope for the lock
-  {
   // Check to see if SetThreadStopInfo() filled in m_thread_ids?
   if (m_thread_ids.empty()) {
       // No, we need to fetch the thread list manually
       UpdateThreadIDList();
   }
+
   // We might set some stop info's so make sure the thread list is up to
   // date before we do that or we might overwrite what was computed here.
   UpdateThreadListIfNeeded();
 
+  // Scope for the lock
+  {
     // Lock the thread stack while we access it
     std::lock_guard<std::recursive_mutex> guard(m_last_stop_packet_mutex);
     // Get the number of stop packets on the stack