Tests: avoid uninitialized warnings in body.t.

body.t

diff --git a/body.t b/body.t
index 37100d3..d406623 100644
--- a/body.t
+++ b/body.t
@@ -122,7 +122,7 @@
 
 # proxy with file only
 
-like(http_get_body('/small', '0123456789'),
+like(http_get_body('/small', '0123456789') || '',
 	qr/X-Body: 0123456789\x0d?$/ms, 'small body in file only');
 
 }

memcached_fake.t

diff --git a/memcached_fake.t b/memcached_fake.t
index d3497df..4227762 100644
--- a/memcached_fake.t
+++ b/memcached_fake.t
@@ -30,6 +30,7 @@
 daemon off;
 
 events {
+use select;
 }
 
 http {