Patch 7.4.710 introduced a condition which relies on adding MAXCOL to a
pointer.  This can cause the resulting value to wrap, this causing the
check for lcs_space to fail.

This is easy to see on i386 when building with -fPIE in CFLAGS/LDFLAGS and
-pie in LDFLAGS.  Running test_listchars will fail in the second chunk
(when trail is disabled).

The below patch fixes this by comparing the difference of the pointers with
trailcol instead.

https://github.com/jamessan/vim/commit/29989f1d4587ca5bd253fd2a5231bba785621941.patch

Cheers,
James

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