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


2 files changed