Merge pull request #1029 from DIYgod/master

[pull] master from diygod:master

Author: pull[bot]

lib/config.js

@@ -247,7 +247,7 @@ const calculateValue = () => {
         },
         pixiv: {
             refreshToken: envs.PIXIV_REFRESHTOKEN,
-            bypassCdn: envs.PIXIV_BYPASS_CDN !== '0' && envs.PIXIV_BYPASS_CDN !== 'false',
+            bypassCdn: envs.PIXIV_BYPASS_CDN && envs.PIXIV_BYPASS_CDN !== '0' && envs.PIXIV_BYPASS_CDN !== 'false',
             bypassCdnHostname: envs.PIXIV_BYPASS_HOSTNAME || 'public-api.secure.pixiv.net',
             bypassCdnDoh: envs.PIXIV_BYPASS_DOH || 'https://1.1.1.1/dns-query',
             imgProxy: envs.PIXIV_IMG_PROXY || 'https://i.pixiv.re',