util/wrap.pl.in: Use parentheses so `kill` gets all its arguments

util/wrap.pl.in: Use parentheses so `kill` gets all its arguments

In perl, this may be ambiguous:

    fn (expr1), expr2

Is the comma (which may be `=>` just as well in this case) a separator
between arguments to `fn`, or is it the comma operator, separating the
expressions `fn(expr1)` and `expr2`?  It appears that in this particular
case, perl takes the existing parentheses to mean the latter.  When the
former was intended, extra parentheses are required.

Fixes #19209

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19211)