switch AttrListPtr::get to take an ArrayRef, simplifying a lot of clients.

llvm-svn: 157556
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index ca935d2..5a132a4 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -486,7 +486,7 @@
                                                   Attributes(Record[i+1])));
       }
 
-      MAttributes.push_back(AttrListPtr::get(Attrs.begin(), Attrs.end()));
+      MAttributes.push_back(AttrListPtr::get(Attrs));
       Attrs.clear();
       break;
     }