[dylink] Fix addEmJs when parameter is indirect pointer

[eagleoflqj]

I'm in the middle of porting libskk with glib, and encountered a SyntaxError: Unexpected token '*'. Given the value of cSig, jsArg and jsArgs in debugger view, it seems straightforward.

[kripken]

Also see the failing test, an expectation needs to be updated. See instructions for that in the CI error.

[sbc100]

Also see the failing test, an expectation needs to be updated. See instructions for that in the CI error.

I think just rebase should fix that