cmMakefile: Clarify purpose of method that pops a scope snapshot

The `PopPolicyBarrier` method is actually responsible for closing any
scope opened by creating a snapshot.  Rename it to `PopSnapshot` and add
a comment explaining the purpose of the poilcy-scope-specific part of
the method.

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 111f074..a112d57 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -904,7 +904,7 @@ private:
   void PushPolicy(bool weak = false,
                   cmPolicies::PolicyMap const& pm = cmPolicies::PolicyMap());
   void PopPolicy();
-  void PopPolicyBarrier(bool reportError = true);
+  void PopSnapshot(bool reportError = true);
   friend class cmCMakePolicyCommand;
   class IncludeScope;
   friend class IncludeScope;