return instead of throw when toggling torch on Android

@@ -376,7 +376,7 @@ class MobileScanner(
      */
     fun toggleTorch(enableTorch: Boolean) {
         if (camera == null) {
-            throw TorchWhenStopped()
+            return
         }
 
         if (camera?.cameraInfo?.hasFlashUnit() == true) {

@@ -4,6 +4,5 @@ class NoCamera : Exception()
 class AlreadyStarted : Exception()
 class AlreadyStopped : Exception()
 class CameraError : Exception()
-class TorchWhenStopped : Exception()
 class ZoomWhenStopped : Exception()
 class ZoomNotInRange : Exception()
\ No newline at end of file

@@ -237,12 +237,8 @@ class MobileScannerHandler(
     }
 
     private fun toggleTorch(call: MethodCall, result: MethodChannel.Result) {
-        try {
-            mobileScanner!!.toggleTorch(call.arguments == 1)
-            result.success(null)
-        } catch (e: TorchWhenStopped) {
-            result.error("MobileScanner", "Called toggleTorch() while stopped!", null)
-        }
+        mobileScanner!!.toggleTorch(call.arguments == 1)
+        result.success(null)
     }
 
     private fun setScale(call: MethodCall, result: MethodChannel.Result) {

@@ -277,7 +277,7 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
         // Turn on the torch if requested.
         if (torch) {
             do {
-                toggleTorchInternal(.on)
+                self.toggleTorchInternal(.on)
             } catch {
                 result(FlutterError(code: error.localizedDescription, message: nil, details: nil))
                 return
@@ -335,7 +335,7 @@ public class MobileScannerPlugin: NSObject, FlutterPlugin, FlutterStreamHandler,
         let requestedTorchMode: AVCaptureDevice.TorchMode = call.arguments as! Int == 1 ? .on : .off
 
         do {
-            try toggleTorchInternal(requestedTorchMode)
+            try self.toggleTorchInternal(requestedTorchMode)
             result(nil)
         } catch {
             result(FlutterError(code: error.localizedDescription, message: nil, details: nil))