[C++ PATCH] Fix option handling when -std=gnu++14 is not used (PR 69865)

[Jason Merrill]

On 02/19/2016 10:51 AM, Bernd Edlinger wrote:
> +  flag_isoc94 = 0;
> +  flag_isoc99 = 0;

Why?  These flags are global variables, so they're already zero-initialized.

Otherwise the changes look good to me.

Jason