CommsInjection: make exception type more specific

Author: meee1

ExtLibs/Comms/CommsInjection.cs

@@ -60,7 +60,7 @@ public int Read(byte[] buffer, int offset, int count)
             {
                 Thread.Sleep(1);
                 if (counttimeout > ReadTimeout)
-                    throw new Exception("CommsInjection Timeout on read");
+                    throw new TimeoutException("CommsInjection Timeout on read");
                 counttimeout++;
             }