gcc14 isn't properly tracking if the irq array index is
greater than zero, and hence generates a warning that
chains to a build error.
This is a temporary patch to ensure that the variable
is greater than zero and hence keeps the warning from
happening. If it was less than zero, a different way
of dealing with it "officially" would be better, but we
lack the insight to know what to do in this case (plus,
it really isn't less than zero as it has never caused
an issue before)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
79a282078f