ada: Fix s-taprop__solaris.adb compilation

Solaris Ada bootstrap is broken as of 2024-08-06 with

s-taprop.adb:1971:23: error: "int" is not visible
s-taprop.adb:1971:23: error: multiple use clauses cause hiding
s-taprop.adb:1971:23: error: hidden declaration at s-osinte.ads:51
s-taprop.adb:1971:23: error: hidden declaration at i-c.ads:62

because one instance of int isn't qualified.  This patch fixes this.

Bootstrapped without regressions on i386-pc-solaris2.11 and
sparc-sun-solaris2.11.

2024-08-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	gcc/ada:
	* libgnarl/s-taprop__solaris.adb (Set_Task_Affinity): Fully
	quality int.