Junie: cleanups. Code fixups.

cmd/mcias/token.go

@@ -4,6 +4,7 @@ import (
 	"crypto/rand"
 	"database/sql"
 	"encoding/hex"
+	"errors"
 	"fmt"
 	"log"
 	"os"
@@ -72,7 +73,7 @@ func addToken() {
 	var userID string
 	err = db.QueryRow("SELECT id FROM users WHERE user = ?", tokenUsername).Scan(&userID)
 	if err != nil {
-		if err == sql.ErrNoRows {
+		if errors.Is(err, sql.ErrNoRows) {
 			logger.Fatalf("User %s does not exist", tokenUsername)
 		}
 		logger.Fatalf("Failed to check if user exists: %v", err)