[fortran,patch] Fix LEADZ/TRAILZ

[Tobias Burnus]

Tobias Burnus wrote:
> FX wrote:
>   
>> The current implementation of LEADZ/TRAILZ has the following bugs:
>>     
> [...]
>   
>> Bootstrapped and regtested on x86_64-linux, comes with testcases.
>> OK to commit?
>>     
> OK. Thanks for finding and fixing this bug.
>   
When I last wrote FX, he said that he won't have time any time soon.
I therefore committed that patch as Rev. 147987.

Thanks again for the patch.

Tobias