BE: Clean up whitespace in call_api function

Author: jokob-sk

front/index.php

@@ -87,20 +87,20 @@ function is_https_request(): bool {
 function call_api(string $endpoint, array $data = []): ?array {
     /*
     Call NetAlertX API endpoint (for login page endpoints that don't require auth).
-    
+
     Returns: JSON response as array, or null on failure
     */
     try {
         // Determine API host (assume localhost on same port as frontend)
         $api_host = $_SERVER['HTTP_HOST'] ?? 'localhost';
         $api_scheme = is_https_request() ? 'https' : 'http';
         $api_url = $api_scheme . '://' . $api_host;
-        
+
         $url = $api_url . $endpoint;
-        
+
         $ch = curl_init($url);
         if (!$ch) return null;
-        
+
         curl_setopt_array($ch, [
             CURLOPT_RETURNTRANSFER => true,
             CURLOPT_TIMEOUT => 5,
@@ -110,20 +110,20 @@ function call_api(string $endpoint, array $data = []): ?array {
                 'Accept: application/json'
             ]
         ]);
-        
+
         if (!empty($data)) {
             curl_setopt($ch, CURLOPT_POST, true);
             curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
         }
-        
+
         $response = curl_exec($ch);
         $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
         curl_close($ch);
-        
+
         if ($httpcode !== 200 || !$response) {
             return null;
         }
-        
+
         return json_decode($response, true);
     } catch (Exception $e) {
         return null;