sem_ch3.adb (Check_Entry_Contract): Call Preanalyze_Spec_Expression so that resolutio...

sem_ch3.adb (Check_Entry_Contract): Call Preanalyze_Spec_Expression so that resolution takes place as well.

2017-04-25  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch3.adb (Check_Entry_Contract): Call
	Preanalyze_Spec_Expression so that resolution takes place as well.
	* sem_util.adb (Check_Internal_Protected_Use): Reject properly
	internal calls that appear in preconditions of protected
	operations, in default values for same, and in contract guards
	for contract cases in SPARK.

From-SVN: r247163