bash: avoid stripping after code-signing
bash: avoid stripping after code-signing

For some reason, if we run `osslsigncode` on the executable and _then_
`strip`, the result seems to get so corrupted that `osslsigncode verify`
itself is unable to verify the result (although the executable seems to
_run_ fine, still).

Let's just avoid this problem by forcing the `strip` part to come before
code-signing.

Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>

git-for-windows/MSYS2-packages,dscho/MSYS2-packages,git-for-windows/MSYS2-packages,git-for-windows/MSYS2-packages,dscho/MSYS2-packages,git-for-windows/MSYS2-packages,dscho/MSYS2-packages,dscho/MSYS2-packages