[lldb] Initialize some bitfields in FuncUnwinders.cpp

This got flagged by msan.

Author: labath

lldb/source/Symbol/FuncUnwinders.cpp

@@ -41,7 +41,9 @@ FuncUnwinders::FuncUnwinders(UnwindTable &unwind_table, AddressRange range)
       m_unwind_plan_arch_default_sp(),
       m_unwind_plan_arch_default_at_func_entry_sp(),
       m_tried_unwind_plan_assembly(false), m_tried_unwind_plan_eh_frame(false),
+      m_tried_unwind_plan_object_file(false),
       m_tried_unwind_plan_debug_frame(false),
+      m_tried_unwind_plan_object_file_augmented(false),
       m_tried_unwind_plan_eh_frame_augmented(false),
       m_tried_unwind_plan_debug_frame_augmented(false),
       m_tried_unwind_plan_compact_unwind(false),