C++11: Allow uniform initialization in ctor init lists.

So
class C { C() : _x{12}, _y({12}) {} };
now parses correctly.

Change-Id: I4281dcb0541a86b550e74630cad6ae0a59fef1b4
Reviewed-by: hjk <qthjk@ovi.com>

src/libs/3rdparty/cplusplus/ASTVisit.cpp

@@ -557,7 +557,7 @@ void MemInitializerAST::accept0(ASTVisitor *visitor)
 {
     if (visitor->visit(this)) {
         accept(name, visitor);
-        accept(expression_list, visitor);
+        accept(expression, visitor);
     }
     visitor->endVisit(this);
 }