Fixed a get_memory_info() bug on Linux since for certain processes /proc/PID/stat does not contain any memory information in which case we return (0, 0) as default.
Fixed a get_memory_info() bug on Linux since for certain processes /proc/PID/stat does not contain any memory information in which case we return (0, 0) as default.

git-svn-id: 9f18dd852162ff6c59c5533c0914e9cf81af9e7c@296 d8a29897-7e4b-0410-a74a-8bb4c295346f

tamentis/psutil,tamentis/psutil,hybridlogic/psutil,hybridlogic/psutil,hybridlogic/psutil