can't compile with vala 0.16

[frenchy82]

With vala 0.16

[ 67%] Generating searchaction.c
/home/cartes/midori/tests/searchaction.vala:54.1-54.1: error: syntax error, expected identifier
};
^
Compilation failed: 1 error(s), 0 warning(s)
make[3]: *** [tests/searchaction_valac.stamp] Erreur 1
make[

[gue5t gue5t (gue5t)]

It looks like valac-0.18 is the first to allow a trailing comma there; removing it makes 0.16 work again.

I hate removing trailing commas but I'll submit a branch so valac-0.16 works again when I get a chance.