map previously ignored __attribute((malloc)) to noalias attribute of llvm function's return

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78541 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index 0e570a6..d9c6b1b 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -1678,6 +1678,7 @@
         
     case Attr::GNUInline:
     case Attr::IBOutletKind:
+    case Attr::Malloc:
     case Attr::NoReturn:
     case Attr::NoThrow:
     case Attr::Nodebug: