Output something from the console sample even if it's ran without arguments.

Running console sample without parameters didn't do anything by default and
didn't output anything neither which was presumably rather confusing. Do
output a welcome message at least to indicate that something happened.

Closes #13299.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68209 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/console/console.cpp

@@ -103,6 +103,14 @@ int main(int argc, char **argv)
             break;
     }
 
+    if ( argc == 1 )
+    {
+        // If there were no command-line options supplied, emit a message
+        // otherwise it's not obvious that the sample ran successfully
+        wxPrintf("Welcome to the wxWidgets 'console' sample!\n");
+        wxPrintf("For more information, run it again with the --help option\n");
+    }
+
     // do something useful here
 
     return 0;