Amend clang::Stmt bitflag setup to the "empty" CXXSpliceExpr ctor

Initialize Stmt::SpliceExprBits::HasTemplateKWAndArgsInfo to false.
Before it was left uninitialized.

Fixes issue 104.

clang/lib/AST/ExprCXX.cpp

@@ -2034,6 +2034,7 @@ CXXSpliceExpr::CXXSpliceExpr(QualType ResultTy, ExprValueKind ValueKind,
 
 CXXSpliceExpr::CXXSpliceExpr(EmptyShell Empty)
   : Expr(CXXSpliceExprClass, Empty) {
+  SpliceExprBits.HasTemplateKWAndArgsInfo = false;
 }
 
 CXXSpliceExpr *CXXSpliceExpr::Create(ASTContext &C,