don't panic if the user forgets to specify the name of the rrd file

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@823 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_create.c b/src/rrd_create.c
index 5eac3600952d14684146aae0625df6c27ec53617..46006ea5d1b77e4552f0ec49a478145ee99edc9c 100644 (file)
--- a/src/rrd_create.c
+++ b/src/rrd_create.c
@@ -78,7 +78,10 @@ rrd_create(int argc, char **argv)
            return(-1);
        }
     }
-
+    if (optind == argc) {
+         rrd_set_error("what is the name of the rrd file you want to create?");
+         return -1;
+    }
     rc = rrd_create_r(argv[optind],
                      pdp_step, last_up,
                      argc - optind - 1, argv + optind + 1);