Ignore size check as COFF assembly doesn't supprt .size directive.
The override function getSectionForMachineBasicBlock will construct
exception section, cold section and general basic block section. This
patch constructs general basic block section only, the exception section
will be constructed in later basic block section Windows exception
handling patch, the cold section will be constructed in later machine
function splitter on Windows patch.
Signed-off-by: Pan, Tao <firstname.lastname@example.org>