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
diff --git a/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp b/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp
index c011c13..172fc78 100644
--- a/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp
+++ b/lldb/tools/debugserver/source/MacOSX/MachVMRegion.cpp
@@ -166,10 +166,7 @@
   // doesn't mean that "addr" is in the range. The data in this object will
   // be valid though, so you could see where the next region begins. So we
   // return false, yet leave "m_err" with a successfull return code.
-  if ((addr < m_start) || (addr >= (m_start + m_size)))
-    return false;
-
-  return true;
+  return !((addr < m_start) || (addr >= (m_start + m_size)));
 }
 
 uint32_t MachVMRegion::GetDNBPermissions() const {