bug#28732: flymake mouse-wheel portability fix

[Noam Postavsky]

charles@aurox.ch (Charles A. Roelli) writes:

>> Is there any reason you cannot simply require mwheel in flymake?  Or
>> does loading mwheel in a --without-x build fail?
>
> Good point.  Can someone with a "--without-x" build handy check that?
> "mwheel.elc" is in src/lisp.mk, so it confuses me that it would not be
> immediately available.

mwheel loads without errors for me in a --without-x build.