优化

app/src/main/java/io/legado/app/service/HttpReadAloudService.kt

@@ -232,7 +232,7 @@ class HttpReadAloudService : BaseReadAloudService(),
     }
 
     private fun md5SpeakFileName(url: String, ttsConfig: String, content: String): String {
-        return MD5Utils.md5Encode16(textChapter!!.title) + "_" + MD5Utils.md5Encode16("$url-|-$ttsConfig-|-$content")
+        return MD5Utils.md5Encode("$url-|-$ttsConfig-|-$content")
     }
 
     private fun createSilentSound(fileName: String) {