More variables gcc moans about

src/interfaces/ecpg/test/expected/preproc-array_of_struct.c

src/interfaces/ecpg/test/expected/preproc-autoprep.c

src/interfaces/ecpg/test/expected/sql-dyntest.c

src/interfaces/ecpg/test/expected/sql-fetch.c

src/interfaces/ecpg/test/expected/sql-func.c

src/interfaces/ecpg/test/expected/sql-indicators.c

src/interfaces/ecpg/test/expected/sql-indicators.stderr

src/interfaces/ecpg/test/expected/sql-insupd.c

src/interfaces/ecpg/test/expected/sql-parser.c

src/interfaces/ecpg/test/expected/sql-quote.c

src/interfaces/ecpg/test/expected/sql-show.c

src/interfaces/ecpg/test/expected/thread-prep.c

src/interfaces/ecpg/test/expected/thread-thread.c

src/interfaces/ecpg/test/expected/thread-thread_implicit.c

src/interfaces/ecpg/test/preproc/array_of_struct.pgc

src/interfaces/ecpg/test/preproc/autoprep.pgc

src/interfaces/ecpg/test/sql/dyntest.pgc

src/interfaces/ecpg/test/sql/fetch.pgc

src/interfaces/ecpg/test/sql/func.pgc

src/interfaces/ecpg/test/sql/indicators.pgc