Args.c: drop 255 byte limit for -keyboard option

Could not find a reason to limit that string.

nx-X11/programs/Xserver/hw/nxagent/Args.c

@@ -643,31 +643,13 @@ int ddxProcessArgument(int argc, char *argv[], int i)
   {
     if (++i < argc)
     {
-      int size;
-
       free(nxagentKeyboard);
       nxagentKeyboard = NULL;
 
-      /* FIXME: why limit to 256? */
-      if ((size = strlen(argv[i])) < 256)
+      if ((nxagentKeyboard = strdup(argv[i])) == NULL)
       {
-        if ((nxagentKeyboard = strndup(argv[i], size)) == NULL)
-        {
-          FatalError("malloc for -keyboard failed");
-        }
+        FatalError("malloc for -keyboard failed");
       }
-      #ifdef WARNING
-      else
-      {
-        /*
-         * it is useless to remember a kbtype
-         * option that has just been truncated.
-         */
-
-        fprintf(stderr, "ddxProcessArgument: WARNING! Option [%s] too long. "
-                        "It will be ignored.\n", argv[i]);
-      }
-      #endif
       return 2;
     }
     return 0;