fix: add missing exit statements in integration callback and OAuth files

api/integrations.php

@@ -111,3 +111,4 @@ try {
     http_response_code(500);
     echo json_encode(['error' => $e->getMessage()]);
 }
+

auth/callback_microsoft.php

@@ -95,3 +95,4 @@ $saveStmt->execute([$user['id'], $accessToken, $refreshToken, json_encode($newSe
 // 8. Succesvol terugkeren naar de Integraties Hub
 header('Location: /integrations.php?success=' . urlencode("Microsoft Outlook succesvol gekoppeld als {$accountEmail}!"));
 exit;
+

auth/oauth_microsoft.php

@@ -40,3 +40,4 @@ $_SESSION['ms_oauth_user_id'] = $user['id'];
 $authUrl = microsoft_get_auth_url($clientId, $redirectUri, $tenantId, $state);
 header("Location: {$authUrl}");
 exit;
+

includes/http.php

@@ -156,3 +156,4 @@ if (!function_exists('fociz_http_request')) {
         ];
     }
 }
+

includes/integrations/jira.php

@@ -308,3 +308,4 @@ function jira_disconnect(int $userId): bool {
     unset($_SESSION["jira_issues_user_{$userId}"]);
     return $stmt->execute([$userId]);
 }
+

includes/integrations/microsoft.php

@@ -257,3 +257,4 @@ function microsoft_disconnect(int $userId): bool {
     $stmt = $db->prepare("DELETE FROM integrations WHERE user_id = ? AND provider = 'OUTLOOK'");
     return $stmt->execute([$userId]);
 }
+