libical 2.0.0 build failure on ARM

[Allen Winter]

Thanks for the patch.  committed with 98667b6bcf2d5ac5b46b3afad6a385ddfc1391a5
I will also compile with -Wtype-limits from now on.

On Monday, January 18, 2016 03:56:29 PM Milan Crha wrote:
> 	Hello,
> while I was working on an update for Fedora with libical 2.0.0 release,
> I realized that the build on ARM fails in the 'regression' test. The
> build itself claims a warning:
> 
> libical-2.0.0/src/libical/icalrecur.c: In function 'icalrecur_add_bydayrules':
> libical-2.0.0/src/libical/icalrecur.c:514:20: warning: comparison is always false due to limited range of data type [-Wtype-limits]
>          if (weekno < 0) {
>                     ^
> 
> Simple change to 'signed char' from 'char' for the 'weekno' declaration
> and assignment fixes the issue, both in the build time and in the
> 'regression' test.
> 
> The patch I use it attached, if you are interested.
> 	Bye,
> 	Milan