Disabled -Yno-double-bindings for a neg test.
Disabled -Yno-double-bindings for a neg test.

The test introduced a double definition, which led to a double
binding. With -Yno-double-bindings this cauases an assertion violation
instead of a reported error.

VladimirNik/dotty,auvik/dotty,sjrd/dotty,som-snytt/dotty,svalaskevicius/dotty,lampepfl/dotty,som-snytt/dotty,svalaskevicius/dotty,lampepfl/dotty,reactormonk/dotty,spetz911/dotty,lampepfl/dotty,vsalvis/dotty,densh/dotty,sjrd/dotty,som-snytt/dotty,sjrd/dotty,dotty-staging/dotty,VladimirNik/dotty,sjrd/dotty,angi2/dotty,dotty-staging/dotty,spetz911/dotty,densh/dotty,yusuke2255/dotty,auvik/dotty,folone/dotty,folone/dotty,lampepfl/dotty,dotty-staging/dotty,sjrd/dotty,dotty-staging/dotty,reactormonk/dotty,lampepfl/dotty,som-snytt/dotty,som-snytt/dotty,angi2/dotty,yusuke2255/dotty,dotty-staging/dotty,vsalvis/dotty