Screenshoter: Avoid exception while copy screen when there is no desktop.

VAR.ScreenAutomation/Code/Screenshoter.cs

@@ -1,4 +1,5 @@
-using System.Drawing;
+using System;
+using System.Drawing;
 using System.Windows.Forms;
 
 namespace VAR.ScreenAutomation.Code
@@ -29,11 +30,15 @@ namespace VAR.ScreenAutomation.Code
                 bmp = new Bitmap(width ?? 0, height ?? 0);
             }
 
+            try
+            {
                 // Draw the screenshot into our bitmap.
                 using (Graphics g = Graphics.FromImage(bmp))
                 {
                     g.CopyFromScreen(left ?? 0, top ?? 0, 0, 0, bmp.Size);
                 }
+            }
+            catch (Exception) { /* Nom Nom Nom */}
             return bmp;
         }
     }