Fix format specifier in proc maps to support 32-bit architectures.

R=ivanpe@chromium.org

Review URL: https://codereview.chromium.org/1280853003

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1483 4c0a9323-5329-0410-9bdc-e9ce6186880e
1 file changed