Minor bug fixes in the help of calypTools

tools/CalypTools.cpp

@@ -1,5 +1,5 @@
 /*    This file is a part of Calyp project
- *    Copyright (C) 2014-2019  by Joao Carreira   (jfmcarreira@gmail.com)
+ *    Copyright (C) 2014-2020  by Joao Carreira   (jfmcarreira@gmail.com)
  *                                Luis Lucas      (luisfrlucas@gmail.com)
  *
  *    This program is free software; you can redistribute it and/or modify
@@ -421,8 +421,8 @@ int CalypTools::Open( int argc, char* argv[] )
 
   if( m_uiOperation == INVALID_OPERATION )
   {
-    log( CLP_LOG_ERROR, "No operation was selected! " );
-    return -1;
+    log( CLP_LOG_ERROR, "No operation was selected! Use --help to see usage.\n" );
+    return 1;
   }
   return iRet;
 }