Removed superfluous return statement in get_data.

src/interfaces/ecpg/compatlib/informix.c

src/interfaces/ecpg/ecpglib/data.c

src/interfaces/ecpg/include/datetime.h

src/interfaces/ecpg/include/decimal.h

src/interfaces/ecpg/include/ecpg_informix.h

src/interfaces/ecpg/include/pgtypes_date.h

src/interfaces/ecpg/preproc/preproc.y