[lldb][NFC] Simplify IOHandler constructor/destructor setup

We only need a default constructor because of DISALLOW_COPY_AND_ASSIGN,
but the non-virtual destructor isn't needed.

1 files changed, 2 insertions, 4 deletions

diff --git a/lldb/include/lldb/Core/IOHandler.h b/lldb/include/lldb/Core/IOHandler.h
index 37142a5a839..04b94da3a8c 100644
--- a/lldb/include/lldb/Core/IOHandler.h
+++ b/lldb/include/lldb/Core/IOHandler.h
@@ -495,9 +495,7 @@ protected:
 
 class IOHandlerStack {
 public:
-  IOHandlerStack() : m_stack(), m_mutex(), m_top(nullptr) {}
-
-  ~IOHandlerStack() = default;
+  IOHandlerStack() = default;
 
   size_t GetSize() const {
     std::lock_guard<std::recursive_mutex> guard(m_mutex);
@@ -574,7 +572,7 @@ protected:
   typedef std::vector<lldb::IOHandlerSP> collection;
   collection m_stack;
   mutable std::recursive_mutex m_mutex;
-  IOHandler *m_top;
+  IOHandler *m_top = nullptr;
 
 private:
   DISALLOW_COPY_AND_ASSIGN(IOHandlerStack);