Allow raw layout to parse integer types

Author: Azoy

lib/Parse/ParseDecl.cpp

@@ -3963,7 +3963,7 @@ ParserStatus Parser::parseNewDeclAttribute(DeclAttributes &Attributes,
         return makeParserSuccess();
       }
 
-      auto countType = parseType(diag::expected_type);
+      auto countType = parseTypeOrValue(diag::expected_type);
       if (countType.isNull()) {
         return makeParserSuccess();
       }