s/AttrListPtr/AttributeSet/g to better label what this class is going to be in the near future.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169651 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Writer/ValueEnumerator.cpp b/lib/Bitcode/Writer/ValueEnumerator.cpp
index 04877bb..3c2cce0 100644
--- a/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -418,7 +418,7 @@
     EnumerateMetadata(V);
 }
 
-void ValueEnumerator::EnumerateAttributes(const AttrListPtr &PAL) {
+void ValueEnumerator::EnumerateAttributes(const AttributeSet &PAL) {
   if (PAL.isEmpty()) return;  // null is always 0.
   // Do a lookup.
   unsigned &Entry = AttributeMap[PAL.getRawPointer()];