[Ada] Remove extra space in single object declarations

[Ada] Remove extra space in single object declarations

gcc/ada/

	* exp_aggr.adb, exp_attr.adb, exp_ch3.adb, exp_ch7.adb,
	exp_dist.adb, exp_util.adb, freeze.adb, frontend.adb,
	inline.adb, itypes.adb, lib-load.adb, lib-xref.adb,
	libgnat/a-cfhase.adb, libgnat/a-cforse.adb,
	libgnat/a-chtgbo.adb, libgnat/a-crdlli.adb,
	libgnat/a-except.adb, libgnat/a-strfix.adb,
	libgnat/a-textio.adb, libgnat/a-tienau.adb,
	libgnat/a-tigeau.adb, libgnat/a-witeio.adb,
	libgnat/a-wtenau.adb, libgnat/a-wtgeau.adb,
	libgnat/a-ztenau.adb, libgnat/a-ztexio.adb,
	libgnat/a-ztgeau.adb, libgnat/g-comlin.adb,
	libgnat/g-debpoo.adb, libgnat/g-expect.adb,
	libgnat/s-fileio.adb, libgnat/s-memory.adb, libgnat/s-mmap.adb,
	libgnat/s-objrea.adb, libgnat/s-pehage.adb,
	libgnat/s-regpat.adb, libgnat/s-shasto.adb,
	libgnat/s-valued.adb, libgnat/s-valuef.adb, par-ch11.adb,
	par-ch4.adb, par-ch6.adb, par-ch9.adb, par_sco.adb,
	repinfo-input.adb, sem_cat.adb, sem_ch10.adb, sem_ch12.adb,
	sem_ch13.adb, sem_ch4.adb, sem_eval.adb, sem_prag.adb,
	sem_res.adb, sem_util.adb, sinput.adb, switch-c.adb: Fix style.