Issue 288: Fix two crashes in single instance mode.

BizHawk.Client.EmuHawk/Input/GamePad.cs

@@ -47,11 +47,14 @@ namespace BizHawk.Client.EmuHawk
 		}
 
 		public static void CloseAll()
+		{
+			if (Devices != null)
 			{
 				foreach (var device in Devices)
 					device.joystick.Dispose();
 				Devices.Clear();
 			}
+		}
 
 		// ********************************** Instance Members **********************************
 

BizHawk.Client.EmuHawk/Program.cs

@@ -273,6 +273,7 @@ REDO_DISPMETHOD:
 
 			void this_StartupNextInstance(object sender, StartupNextInstanceEventArgs e)
 			{
+				if (e.CommandLine.Count >= 1)
 					(MainForm as MainForm).LoadRom(e.CommandLine[0]);
 			}