Fix: Debug logging would cause crash on request timeout
Fix: Debug logging would cause crash on request timeout

datastax/cpp-driver,mikefero/cpp-driver,datastax/cpp-driver,hpcc-systems/cpp-driver,mikefero/cpp-driver,mikefero/cpp-driver,hpcc-systems/cpp-driver,hpcc-systems/cpp-driver,datastax/cpp-driver,hpcc-systems/cpp-driver,datastax/cpp-driver,mikefero/cpp-driver,mikefero/cpp-driver