CLSA-2026-1778009078 vim: Fix of 5 CVEs

CVE-2022-2125: fix out-of-bounds read in getlispindent; break out of the inner loop on NUL byte indent.c, upstream patch 8.2.5122 - CVE-2021-3974: fix use-after-free in nfaregmatch when a substitute callback frees the regline during a mark comparison; save col and re-fetch rex.line via reggetline...