Silence compilers warnings without _HANDLE_ENLIST_IN_DTC_ or USE_LIBPQ.
Silence compilers warnings without _HANDLE_ENLIST_IN_DTC_ or USE_LIBPQ.

Compiler complained about unused variable.

gavioto/psqlodbc,hlinnaka/psqlodbc,hlinnaka/psqlodbc,hlinnaka/psqlodbc,gavioto/psqlodbc,gavioto/psqlodbc