[c++] noexcept and override don't get correctly highlighted

[aeschli]

From @jrlanglois on December 1, 2016 0:27

• VSCode Version: 1.7.2
• OS Version: 10.11.6 (El Capitan)

Example:

Code:

override
void foo() override
{
}

noexcept
void bar() noexcept
{
}

Funnily enough, GitHub's C++ synthax highlighter has the opposite result!

Copied from original issue: microsoft/vscode#16300