Fix exception handler build with MSVC versions prior to 2005. r=mmentovai.
Fix exception handler build with MSVC versions prior to 2005. r=mmentovai.

git-svn-id: a14e546401035be51a469fbea25ecce70a1a22f2@123 4c0a9323-5329-0410-9bdc-e9ce6186880e

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