SOCK_get_next_byte should not return garbage after error/EOF.  Return zero bytes instead.
SOCK_get_next_byte should not return garbage after error/EOF.  Return
zero bytes instead.

hlinnaka/psqlodbc,hlinnaka/psqlodbc,hlinnaka/psqlodbc,gavioto/psqlodbc,treasure-data/prestogres-odbc,treasure-data/prestogres-odbc,treasure-data/prestogres-odbc,Distrotech/psqlodbc,Distrotech/psqlodbc,gavioto/psqlodbc,gavioto/psqlodbc,Distrotech/psqlodbc