debugfs: fix a bug in string_to_time() which misparsed @NNNNNNN inputs

Thanks to David Turner <novalis@novalis.org> for reporting this bug.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>

debugfs/util.c

@@ -232,7 +232,7 @@ extern __s64 string_to_time(const char *arg)
 		/* interpret it as an integer */
 		arg++;
 	fallback:
-		ret = strtoll(arg+1, &tmp, 0);
+		ret = strtoll(arg, &tmp, 0);
 		if (*tmp)
 			return -1;
 		return ret;