[PATCH][GOLD] Fix Mac OSX build breakage due to warnings.

[Ian Lance Taylor]

"Doug Kwan (關振德)" <dougkwan@google.com> writes:

> 010-02-22  Doug Kwan  <dougkwan@google.com>
>
>         * gold-threads.h (Once::~Once): Explicitly define virtual destructor.
>         * icf.cc (get_section_contents): Cast snprintf argument to long long
>         types to avoid warnings due to different uint64_t implementations
>         on different hosts.

This is OK.

Thanks.

Ian