fixed test count

Author: dndx

t/balancer.t

@@ -9,7 +9,7 @@ use t::TestCore;
 
 repeat_each(2);
 
-plan tests => repeat_each() * (blocks() * 4 + 5);
+plan tests => repeat_each() * (blocks() * 4 + 6);
 
 $ENV{TEST_NGINX_LUA_PACKAGE_PATH} = "$t::TestCore::lua_package_path";