Updates TDU message decoded message text.

src/module/decode/p25/message/tdu/TDUMessage.java

@@ -18,4 +18,19 @@ public class TDUMessage extends P25Message
 	    mCRC = new CRC[ 1 ];
 	    mCRC[ 0 ] = CRC.PASSED;
     }
+	
+	@Override
+    public String getMessage()
+    {
+		StringBuilder sb = new StringBuilder();
+		
+		sb.append( "NAC:" );
+		sb.append( getNAC() );
+		sb.append( " " );
+		sb.append( getDUID().getLabel() );
+		
+		sb.append( " TERMINATOR DATA UNIT" );
+		
+	    return sb.toString();
+    }
 }