Fix an INVALIDATE_ITERATOR defect reported by Coverity.
Fix an INVALIDATE_ITERATOR defect reported by Coverity.

std::vector::erase() invalidates the iterator, so we need
to advance the iterator by using the return value of erase().

R=nealsid
A=wtc



git-svn-id: 7939527bf0a06ad24ad020f729d5600cb42ed5d7@370 4c0a9323-5329-0410-9bdc-e9ce6186880e

mikewied/breakpad,mikewied/breakpad,mikewied/breakpad,mikewied/breakpad,mikewied/breakpad,mikewied/breakpad