commit f9b7c660d700ffa2166b80333bfd89f96fbfb186
author Brad King <brad.king@kitware.com> Tue Jul 30 11:05:04 2019 -0400
committer Brad King <brad.king@kitware.com> Tue Jul 30 11:17:28 2019 -0400
tree 55dd5035668a38c969160dcd55b5b9cb5648152c
parent f43a7d76c737c5bb9b903a2b1be5186c081ec21e

VS: Fix mapping of `-Qspectre-` flag

The mapping for this flag was added by commit 43aa632f57 (VS: Populate
`-Qspectre-` flag table entry for v142, 2019-01-24, v3.14.0-rc1~74^2~7).
However, it did not do anything because the special logic added by
commit bb60ed6e72 (VS: Add flag table entry for -Qspectre, 2018-10-08,
v3.13.0-rc1~4^2) to move the `SpectreMitigation` element from
`ClCompile` to the top level only handled the presence of the setting
and not its value.  Extend the special logic to carry the value too.

Fixes: #19535