This test fails for Darwin m32 because it's scanning for absence
of an instruction that's validly used in PIC code.  Fixed, in this
case, by using non-PIC codegen.

2019-06-13  Iain Sandoe  <iain@sandoe.co.uk>

	* g++.dg/pr71694.C: Use non-PIC codegen for Darwin m32.

From-SVN: r272257