fixes bug 1297760: Adjust logging for OSError (#3519)
fixes bug 1297760: Adjust logging for OSError (#3519)

Peter pointed out it'd be better to have *any* logging, so I added
a logging.info line.
adngdb/socorro,adngdb/socorro,lonnen/socorro,adngdb/socorro,m8ttyB/socorro,AdrianGaudebert/socorro,adngdb/socorro,Tayamarn/socorro,m8ttyB/socorro,AdrianGaudebert/socorro,AdrianGaudebert/socorro,mozilla/socorro,m8ttyB/socorro,Tayamarn/socorro,AdrianGaudebert/socorro,mozilla/socorro,Tayamarn/socorro,Tayamarn/socorro,lonnen/socorro,Tayamarn/socorro,mozilla/socorro,lonnen/socorro,mozilla/socorro,m8ttyB/socorro,AdrianGaudebert/socorro,m8ttyB/socorro,mozilla/socorro,lonnen/socorro,mozilla/socorro,adngdb/socorro,adngdb/socorro,m8ttyB/socorro,AdrianGaudebert/socorro,Tayamarn/socorro