Fix FreeBSD build after thread changes

More work on the GetName/SetName arguments (thread_t vs tid_t) is needed
but this change should restore the build and basic operation.

llvm-svn: 217502
diff --git a/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h b/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h
index 0f31934..68bf2f8 100644
--- a/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h
+++ b/lldb/source/Plugins/Process/FreeBSD/ProcessMonitor.h
@@ -213,8 +213,8 @@
 private:
     ProcessFreeBSD *m_process;
 
-    HostThread m_operation_thread;
-    HostThread m_monitor_thread;
+    lldb_private::HostThread m_operation_thread;
+    lldb_private::HostThread m_monitor_thread;
     lldb::pid_t m_pid;
 
     int m_terminal_fd;