Tests: don't call methods before new().

ssi-include-big.t

diff --git a/ssi-include-big.t b/ssi-include-big.t
index 5d65f15..d132794 100644
--- a/ssi-include-big.t
+++ b/ssi-include-big.t
@@ -21,7 +21,7 @@
 select STDERR; $| = 1;
 select STDOUT; $| = 1;
 
-my $t = Test::Nginx->has('rewrite')->plan(3)->new();
+my $t = Test::Nginx->new()->has('rewrite')->plan(3);
 
 $t->write_file_expand('nginx.conf', <<'EOF');