修复在线tts朗读bug

app/src/main/java/io/legado/app/utils/NetworkUtils.kt

@@ -155,7 +155,8 @@ object NetworkUtils {
      * http://www.biquge.com.cn => http://biquge.com.cn
      * http://www.content.example.com => http://example.com
      */
-    fun getSubDomain(url: String?): String {
+    fun getSubDomain(url: String): String {
+        return kotlin.runCatching {
             val baseUrl = getBaseUrl(url) ?: return ""
             val mURL = URL(baseUrl)
             val schema: String = mURL.protocol
@@ -164,7 +165,8 @@ object NetworkUtils {
             if (isIPAddress(host)) return baseUrl
             //PublicSuffixDatabase处理域名
             val domain = PublicSuffixDatabase.get().getEffectiveTldPlusOne(host)
-        return if (domain == null) baseUrl else "${schema}://${domain}"
+            if (domain == null) baseUrl else "${schema}://${domain}"
+        }.getOrDefault(url)
     }
 
     /**