scst: Remove empty statements after control-flow blocks

Coccinelle misc/semicolon.cocci reports:

  iscsi-scst/usr/iscsi_scstd.c:958:2-3: Unneeded semicolon
  iscsi-scst/usr/iscsid.c:367:4-5: Unneeded semicolon
  scst/src/scst_event.c:772:2-3: Unneeded semicolon
  usr/stpgd/stpgd_main.c:269:3-4: Unneeded semicolon

Remove the trailing semicolons after the iSCSI netlink-open check, login
parameter check, event-size read check and STPG child-cleanup loop. Each
semicolon is
an empty statement after a completed block, so removing it preserves
control flow and requires no analyzer exception.

iscsi-scst/usr/iscsi_scstd.c

@@ -955,7 +955,7 @@ int main(int argc, char **argv)
 	if ((nl_fd = nl_open()) < 0) {
 		perror("netlink open failed");
 		exit(-1);
-	};
+	}
 
 	err = kernel_attr_add(NULL, ISCSI_ISNS_SERVER_ATTR_NAME,
 			S_IRUSR|S_IRGRP|S_IROTH|S_IWUSR, 0);

iscsi-scst/usr/iscsid.c

@@ -364,7 +364,7 @@ static void text_scan_login(struct connection *conn)
 			if (idx == key_max_recv_data_length) {
 				conn->session_params[idx].key_state = KEY_STATE_DONE;
 				idx = key_max_xmit_data_length;
-			};
+			}
 
 			if (params_str_to_val(session_keys, idx, value, &val) < 0) {
 				if (conn->session_params[idx].key_state == KEY_STATE_START) {

scst/src/scst_event.c

@@ -769,7 +769,7 @@ static int scst_event_user_next_event(struct scst_event_priv *priv, void __user
 	if (res != 0) {
 		PRINT_ERROR("Failed to get max event size: %d", res);
 		goto out;
-	};
+	}
 
 	/* Waiting for at least one event, if blocking */
 	while (list_empty(&priv->queued_events_list)) {

usr/stpgd/stpgd_main.c

@@ -266,7 +266,7 @@ static int handle_stpg_received(struct scst_event_user *event_user)
 			rc = wait_until_finished(pids[k], 1, &status, k);
 			if (rc != 0)
 				break;
-		};
+		}
 	}
 
 	TRACE_EXIT_RES(res);