Darwin regtest: add prereq for helgrind/tests/bug322621

It needs pthread_barrier which Darwin doesn't have

diff --git a/helgrind/tests/bug322621.vgtest b/helgrind/tests/bug322621.vgtest
index e4fcd44faafe1ee71fd26d91cd8f7f465ef04a1e..5c66660fe57c3e4de7def03e08be91f3eee28217 100644 (file)
--- a/helgrind/tests/bug322621.vgtest
+++ b/helgrind/tests/bug322621.vgtest
@@ -1,2 +1,3 @@
+prereq: test -e bug322621
 vgopts: -q
 prog: bug322621