vectors are cleared with "clear()", not with "empty()
vectors are cleared with "clear()", not with "empty()

A=thakis@chromium.org
R=thestig@chromium.org

Original code review: https://breakpad.appspot.com/377003/
Review URL: https://breakpad.appspot.com/380001

git-svn-id: 7939527bf0a06ad24ad020f729d5600cb42ed5d7@949 4c0a9323-5329-0410-9bdc-e9ce6186880e

wesen/google-breakpad,bittorrent/breakpad,wesen/google-breakpad,wesen/google-breakpad,bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad,wesen/google-breakpad,bittorrent/breakpad,bittorrent/breakpad,wesen/google-breakpad,wesen/google-breakpad,bittorrent/breakpad