Fix commit f7373b7:

Show version and help if no arguments given, but ONLY IF default config file isn't found. Otherwise use the default config file just as we always were prior to commit f7373b7.

Fixes GitHub Issue SDL-Hercules-390#548.

impl.c

@@ -835,14 +835,6 @@ int     rc;
     init_progname( argc, argv );
     init_sysblk_version_str_arrays( NULL );
 
-    if (argc < 2)
-    {
-        display_version( stdout, 0, NULL );
-        arghelp();
-        WRMSG( HHC02343, "S", 1 );
-        return 1;
-    }
-
     /* Initialize SETMODE and set user authority */
     SETMODE( INIT );
 
@@ -1147,9 +1139,15 @@ int     rc;
     set_thread_priority_id( sysblk.loggertid, sysblk.srvprio );
     LOG_TID_BEGIN( sysblk.loggertid, LOGGER_THREAD_NAME );
 
+    /* Always show version right away */
+    display_version( stdout, 0, NULL );
+
     /* Process command-line arguments. Exit if any serious errors. */
     if ((rc = process_args( argc, argv )) != 0)
     {
+        /* Show them our command line arguments */
+        arghelp();
+
         // "Terminating due to %d argument errors"
         WRMSG( HHC02343, "S", rc );
         delayed_exit( rc );
@@ -1853,8 +1851,8 @@ static int process_args( int argc, char* argv[] )
     /* Terminate if invalid arguments were detected */
     if (arg_error)
     {
-        /* Show them all of our command-line arguments... */
-        arghelp();
+        /* Do nothing. Caller will call "arghelp" to
+          show them our command-line arguments... */
     }
     else /* Check for config and rc file, but don't open */
     {