[svn-r6000] Purpose:

Bug fix (ID 765 and part of ID 841)
Description:
    "h5dump -H" would core dump.  It was because the code was not
    checking if there was any file argument after option parsing.
    It referred to an non-existing filename argument.
    There was also some very old but not commented code which allowed
    the use of back slash to escape a filename begun with '-'.  The
    '--' option is better and more common practice.
Solution:
    Added code to check if there is still a filename argument after parsing.
    (This checking probably should goto inside the option_parsing routine.
    Also removed that old code mentioned above.
Platforms tested:
    eirene, arabica and modi4

tools/h5dump/h5dump.c

@@ -2740,10 +2740,12 @@ main(int argc, const char *argv[])
         }
     }
 
-    if (argv[opt_ind][0] == '\\')
-	fname = &argv[opt_ind][1];
-    else
-	fname = argv[opt_ind];
+    if (argc <= opt_ind) {
+        error_msg(progname, "missing file name\n");
+        usage(progname);
+        exit(EXIT_FAILURE);
+    }
+    fname = argv[opt_ind];
 
     fid = h5tools_fopen(fname, driver, NULL, 0);