vm: Don't set the register count to 0 before the last vm pass.
vm: Don't set the register count to 0 before the last vm pass.

Doing so may cause the gc to delete values that still exist in a
visible register. That can result in a double free and crash when
doing the final deref and delete of the underlying values.

FascinatedBox/lily,FascinatedBox/lily,jesserayadkins/lily,jesserayadkins/lily,FascinatedBox/lily,FascinatedBox/lily,jesserayadkins/lily