Remove redundant passing around of a "ContainsAutoType" flag.

This flag serves no purpose other than to prevent us walking through a type to
check whether it contains an 'auto' specifier; this duplication of information
is error-prone, does not appear to provide any performance benefit, and will
become less practical once we support C++1z deduced class template types and
eventually constrained types from the Concepts TS.

No functionality change intended.

llvm-svn: 291737
diff --git a/clang/lib/Sema/SemaCoroutine.cpp b/clang/lib/Sema/SemaCoroutine.cpp
index f6115c1..9814b4a 100644
--- a/clang/lib/Sema/SemaCoroutine.cpp
+++ b/clang/lib/Sema/SemaCoroutine.cpp
@@ -187,7 +187,7 @@
                         S.Context.getTrivialTypeSourceInfo(T, Loc), SC_None);
     S.CheckVariableDeclarationType(ScopeInfo->CoroutinePromise);
     if (!ScopeInfo->CoroutinePromise->isInvalidDecl())
-      S.ActOnUninitializedDecl(ScopeInfo->CoroutinePromise, false);
+      S.ActOnUninitializedDecl(ScopeInfo->CoroutinePromise);
   }
 
   return ScopeInfo;