val was not initialized, so dirfd's value for fail

depended on the previous test(s)

p4raw-id: //depot/metaconfig@25168

diff --git a/U/perl/d_dirfd.U b/U/perl/d_dirfd.U
index 5d75d83..3900610 100644 (file)
--- a/U/perl/d_dirfd.U
+++ b/U/perl/d_dirfd.U
@@ -65,6 +65,7 @@ int main() {
                exit(1);
 }
 EOM
+val=$undef
 set dirfd
 if eval $compile; then
        val="$define"