wflinfo: silence signed/unsigned comparison warning
wflinfo: silence signed/unsigned comparison warning

The variable i is used as and compared vs unsigned int.
Change its type so silence the compiler warning.

Note: GLint is incorrectly typedeffed as unsigned and we're
using signed int where unsigned is required by the GL API
and vice versa. These will be addressed by followup patches.

Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
Reviewed-by: Brian Paul <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@vmware.com>
Reviewed-by: Jose Fonseca <61b5a29db2c0650f7c8510f93eece059c1b09320@vmware.com>
Reviewed-by: Chad Versace <a557f7f75bf28dc19ac99107f5cc7cd6b3fbdb1a@linux.intel.com>

janesma/waffle,waffle-gl/waffle,maurossi/waffle,fjhenigman/waffle,maurossi/waffle,janesma/waffle,chadversary/waffle,fjhenigman/waffle,evelikov/waffle,fjhenigman/waffle,dcbaker/waffle,waffle-gl/waffle,evelikov/waffle,dcbaker/waffle,waffle-gl/waffle,waffle-gl/waffle,janesma/waffle,chadversary/waffle,chadversary/waffle,maurossi/waffle,evelikov/waffle,dcbaker/waffle