exp_ch9.adb (Expand_Entry_Barrier): Code cleanup.

exp_ch9.adb (Expand_Entry_Barrier): Code cleanup.

2017-04-27  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch9.adb (Expand_Entry_Barrier): Code
	cleanup. Do not perform the optimization which removes the
	declarations of the discriminant and component renamings when
	validity checks on operands and attributes are in effect.

2017-04-27  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_spark.adb, exp_util.adb, sem_ch7.adb, g-dyntab.adb, g-dyntab.ads,
	freeze.adb, a-cfinve.ads, a-cofuma.adb, a-cofuma.ads, a-cfhama.adb,
	a-cfhama.ads, a-cofove.ads: Minor reformatting.

2017-04-27  Hristian Kirtchev  <kirtchev@adacore.com>

	* g-debpoo.adb (Dump_Gnatmem): Protect against a possible null
	pointer dereference.
	* g-spipat.adb (Dump): Code clean up. Protect against a possible
	null pointer dereference.

From-SVN: r247326