Simplify Boolean expressions

This patch simplifies boolean expressions acorss LLDB. It was generated
using clang-tidy with the following command:

run-clang-tidy.py -checks='-*,readability-simplify-boolean-expr' -format -fix $PWD

Differential revision: https://reviews.llvm.org/D55584

llvm-svn: 349215

lldb/source/Plugins/ObjectFile/PECOFF/ObjectFilePECOFF.cpp

@@ -527,7 +527,7 @@ bool ObjectFilePECOFF::ParseSectionHeaders(
     }
   }
 
-  return m_sect_headers.empty() == false;
+  return !m_sect_headers.empty();
 }
 
 bool ObjectFilePECOFF::GetSectionName(std::string &sect_name,