isl_printer_print_point: properly handle points with dimensions of different types
isl_printer_print_point: properly handle points with dimensions of different types

Reported-by: Tobias Grosser <95708bb826918f1910ca412749f644ae3d52a568@inf.ethz.ch>
Tested-by: Tobias Grosser <95708bb826918f1910ca412749f644ae3d52a568@inf.ethz.ch>
Signed-off-by: Sven Verdoolaege <235c10dd23b819f81cdc9756a251746bc184cab6@gmail.com>

Meinersbur/isl,Meinersbur/isl,Meinersbur/isl,Meinersbur/isl