AST: Add AlignMac68kAttr, not yet used.

llvm-svn: 104800
diff --git a/clang/lib/Frontend/PCHWriter.cpp b/clang/lib/Frontend/PCHWriter.cpp
index efa0e37..3d5b7d8 100644
--- a/clang/lib/Frontend/PCHWriter.cpp
+++ b/clang/lib/Frontend/PCHWriter.cpp
@@ -1836,6 +1836,9 @@
       AddString(cast<AliasAttr>(Attr)->getAliasee(), Record);
       break;
 
+    case Attr::AlignMac68k:
+      break;
+
     case Attr::Aligned:
       Record.push_back(cast<AlignedAttr>(Attr)->getAlignment());
       break;