Cleanup; technical commit meant to trigger a GNAT continuous builder.
gcc/ada/ChangeLog:
* sem_aux.ads (First_Discriminant): Remove space before period.
-- this is equivalent to First_Entity. The exception arises for tagged
-- types, where the tag itself is prepended to the front of the entity
-- chain, so the First_Discriminant function steps past the tag if it is
- -- present. When called on a private type with unknown discriminants, the
+ -- present. When called on a private type with unknown discriminants, the
-- function always returns Empty.
-- WARNING: There is a matching C declaration of this subprogram in fe.h