Fix some Clang-tidy warnings and formatting in recently added code.

Fixed Clang-tidy warnings:

* modernize-use-override;
* modernize-use-nullptr;
* modernize-use-default;
* readability-simplify-boolean-expr.

llvm-svn: 252374

1 files changed, 1 insertions, 2 deletions

diff --git a/lldb/source/Plugins/Language/Go/GoFormatterFunctions.cpp b/lldb/source/Plugins/Language/Go/GoFormatterFunctions.cpp
index f80a1535541..1d7cd76b973 100644
--- a/lldb/source/Plugins/Language/Go/GoFormatterFunctions.cpp
+++ b/lldb/source/Plugins/Language/Go/GoFormatterFunctions.cpp
@@ -10,7 +10,6 @@
 // C Includes
 // C++ Includes
 #include <map>
-#include <vector>
 
 // Other libraries and framework includes
 // Project includes
@@ -169,6 +168,6 @@ lldb_private::formatters::GoSliceSyntheticFrontEndCreator(CXXSyntheticChildren *
 
     lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
     if (!process_sp)
-        return NULL;
+        return nullptr;
     return new GoSliceSyntheticFrontEnd(*valobj_sp);
 }