remove some invoke calls

app/src/main/kotlin/com/simplemobiletools/gallery/asynctasks/GetDirectoriesAsynctask.kt

@@ -125,6 +125,6 @@ class GetDirectoriesAsynctask(val context: Context, val isPickVideo: Boolean, va
 
     override fun onPostExecute(dirs: ArrayList<Directory>) {
         super.onPostExecute(dirs)
-        callback.invoke(dirs)
+        callback(dirs)
     }
 }

app/src/main/kotlin/com/simplemobiletools/gallery/asynctasks/GetMediaAsynctask.kt

@@ -17,6 +17,6 @@ class GetMediaAsynctask(val context: Context, val mPath: String, val isPickVideo
 
     override fun onPostExecute(media: ArrayList<Medium>) {
         super.onPostExecute(media)
-        callback.invoke(media)
+        callback(media)
     }
 }

app/src/main/kotlin/com/simplemobiletools/gallery/helpers/GlideDecoder.kt

@@ -12,7 +12,6 @@ import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.bumptech.glide.request.RequestOptions
 import com.davemorrissey.labs.subscaleview.decoder.ImageDecoder
 
-
 class GlideDecoder : ImageDecoder {
     override fun decode(context: Context, uri: Uri): Bitmap {
         val options = RequestOptions()