Fix type in string_conversion.cc introduced in r1046
Fix type in string_conversion.cc introduced in r1046

git-svn-id: 7939527bf0a06ad24ad020f729d5600cb42ed5d7@1049 4c0a9323-5329-0410-9bdc-e9ce6186880e

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