Don't allocate DWO file hash on obstack This changes allocate_dwo_file_hash_table so that it does not use the objfile obstack to store the contents of the hash table. 2020-02-08 Tom Tromey <tom@tromey.com> * dwarf2/read.c (allocate_dwo_file_hash_table): Don't allocate on obstack. Change-Id: Ic20a618acc7277e56aa18580c68f75c793bef97b