Remove some needless GetMakefile() calls.

Source/cmCustomCommandGenerator.cxx

@@ -101,7 +101,7 @@ cmCustomCommandGenerator
       }
     else
       {
-      cmOutputConverter converter(this->LG->GetMakefile()->GetStateSnapshot());
+      cmOutputConverter converter(this->LG->GetStateSnapshot());
       cmd += converter.EscapeForShell(arg, this->MakeVars);
       }
     }

Source/cmGeneratorExpressionEvaluationFile.cxx

@@ -139,7 +139,7 @@ void cmGeneratorExpressionEvaluationFile::Generate(cmLocalGenerator *lg)
       {
       std::ostringstream e;
       e << "Evaluation file \"" << this->Input << "\" cannot be read.";
-      lg->GetMakefile()->IssueMessage(cmake::FATAL_ERROR, e.str());
+      lg->IssueMessage(cmake::FATAL_ERROR, e.str());
       return;
       }
 

Source/cmGlobalUnixMakefileGenerator3.cxx

@@ -495,7 +495,7 @@ cmGlobalUnixMakefileGenerator3
   // The directory-level rule should depend on the directory-level
   // rules of the subdirectories.
   std::vector<cmState::Snapshot> children
-      = lg->GetMakefile()->GetStateSnapshot().GetChildren();
+      = lg->GetStateSnapshot().GetChildren();
   for(std::vector<cmState::Snapshot>::const_iterator
         ci = children.begin(); ci != children.end(); ++ci)
     {