[PATCH] stdio-common: Consistently use 'num_digits_len' in 'vfscanf'

[Maciej W. Rozycki]

Hi Arjun,

> > Make the only place use 'num_digits_len' where 10 is referred literally
> > for a digit index in i18n handling for decimal integers.  No change in
> > code produced.
> > ---
> > Verified with a `powerpc64le-linux-gnu' native configuration.
> 
> Thanks! This looks good to me.

 I have realised that the commit description does not clarify what 
'num_digits_len' is and one has to refer to code, and than one outside the 
immediate vicinity of the change made, to find out that it is an 
enumeration constant.  I have therefore updated the text with this missing 
piece of information and committed the result as obvious, without another 
review round.

 Thank you for your review.

  Maciej