Fix a small bug related to create folders

Author: Gh0u1L5

src/main/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="com.gh0u1l5.wechatmagician"
-          android:versionCode="19"
-          android:versionName="2.2.0">
+          android:versionCode="20"
+          android:versionName="2.2.1">
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

src/main/kotlin/com/gh0u1l5/wechatmagician/util/ImageUtil.kt

@@ -45,7 +45,9 @@ object ImageUtil {
         val encEngine = newInstance(WechatPackage.EncEngine, media.key)
         callMethod(encEngine, WechatPackage.EncEngineEDMethod, content, content.size)
 
-        val out = FileOutputStream(path)
+        val file = File(path)
+        file.parentFile.mkdirs()
+        val out = FileOutputStream(file)
         out.write(content)
         out.close()
     }