ID: 113 - delloem exec file won't handle more than one command

Commit fixes issue with 'delloem' subcommands being executed via 'exec'. State
of variable 'current_arg' is kept between calls which leads to incorrect argv
parsing.
Set variable 'current_arg' every time ipmi_delloem_main() is called.

ipmitool/lib/ipmi_delloem.c

@@ -257,6 +257,7 @@ int
 ipmi_delloem_main(struct ipmi_intf * intf, int argc, char ** argv)
 {
 	int rc = 0;
+	current_arg = 0;
 	if (argc == 0 || strncmp(argv[0], "help\0", 5) == 0) {
 		usage();
 		return 0;