[cairo] cairo-path-fixed.c: warning: comparison between signed and unsigned

[Ryan Schmidt]

Hello everybody. Compiling cairo 1.4.2 on Mac OS X 10.4.9, I get this  
output:

cairo-path-fixed.c: In function '_cairo_path_fixed_add':
cairo-path-fixed.c:359: warning: comparison between signed and unsigned
cairo-path-fixed.c:360: warning: comparison between signed and unsigned

Version 1.4.0 didn't do that.