optimization: remove NYI call.

Author: chronolaw

lib/resty/core/time.lua

@@ -72,12 +72,14 @@ end
 
 
 function ngx.now()
- return tonumber(ngx_lua_ffi_now())
+ local now = tonumber(ngx_lua_ffi_now())
+ return now
 end
 
 
 function ngx.time()
- return tonumber(ngx_lua_ffi_time())
+ local time = tonumber(ngx_lua_ffi_time())
+ return time
 end
 
 
@@ -168,7 +170,8 @@ function ngx.parse_http_time(time_str)
  return nil
  end
 
- return tonumber(res)
+ local time = tonumber(res)
+ return time
 end
 
 end