[erlang-patches] sys_pre_expand: Fix BASE never being set

[Tomáš Janoušek]

Commit a612e99fb5aaa934fe5a8591db0f083d7fa0b20a turned module attributes from
2-tuples to 3-tuples but forgot to update get_base/1, breaking BASE for
parametric modules.

git fetch git://github.com/liskin/otp.git edoc-callback-attribute

https://github.com/liskin/otp/compare/maint
https://github.com/liskin/otp/compare/maint.patch

Regards,
-- 
Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/