[gold] Fix empty filename error

[Ian Lance Taylor]

Richard Sandiford <richard.sandiford@linaro.org> writes:

> gold/
> 	* fileread.cc (Input_file::find_file): Initialize *found_name
> 	and *namep when using the fallback search for case 4.

This is OK.

Odd that this hasn't been seen before.

Thanks.

Ian