Require dw2-skip-prologue for pr24172.sh

Add missing require of dw2-skip-prologue for pr24172.sh in dwz-tests.exp.

This fixes buildbot failures on dwz-debian-armhf and dwz-debian-i386.

2019-04-24  Tom de Vries  <tdevries@suse.de>

	* testsuite/dwz.tests/dwz-tests.exp: Require dw2-skip-prologue for
	pr24172.sh.

---
 testsuite/dwz.tests/dwz-tests.exp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/testsuite/dwz.tests/dwz-tests.exp b/testsuite/dwz.tests/dwz-tests.exp
index 04f00fc..fbc94ac 100644
--- a/testsuite/dwz.tests/dwz-tests.exp
+++ b/testsuite/dwz.tests/dwz-tests.exp
@@ -36,6 +36,9 @@ foreach test $tests {
 	    continue
 	}
     }
+    if { $basename == "pr24172.sh" } {
+	lappend required_execs "dw2-skip-prologue"
+    }
     if { ![istarget x86_64-*-*] } {
 	if { $basename == "pr24468.sh" } {
 	    unsupported "$test"