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/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
index 7fd886c..1ff0ec2 100644
--- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
+++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
@@ -65,7 +65,7 @@
     }
   }
 
-  if (UseDYLDSPI(process) == false) {
+  if (!UseDYLDSPI(process)) {
     create = false;
   }
 
@@ -503,8 +503,7 @@
           info_dict->GetValueForKey("shared_cache_uuid")->GetStringValue();
       if (!uuid_str.empty())
         uuid.SetFromStringRef(uuid_str);
-      if (info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue() ==
-          false)
+      if (!info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue())
         using_shared_cache = eLazyBoolYes;
       else
         using_shared_cache = eLazyBoolNo;