Breakpad DWARF parser: Don't use auto_ptr<stack<uint64> > where stack<uint64> would do.
Breakpad DWARF parser: Don't use auto_ptr<stack<uint64> > where stack<uint64> would do.

Perhaps there once was some reason one needed the DIE offset stack to
have an unusual lifetime, but there is none now.

a=jimblandy, r=mmentovai


git-svn-id: a14e546401035be51a469fbea25ecce70a1a22f2@666 4c0a9323-5329-0410-9bdc-e9ce6186880e

tomgr/google-breakpad,tomgr/google-breakpad,tomgr/google-breakpad,tomgr/google-breakpad,tomgr/google-breakpad