apache plugin: Fix the signature of the curl callback function.

diff --git a/src/apache.c b/src/apache.c
index c661a7a..522a3e3 100644 (file)
--- a/src/apache.c
+++ b/src/apache.c
@@ -74,9 +74,18 @@ static void apache_free (apache_t *st)
 } /* apache_free */
 
 static size_t apache_curl_callback (void *buf, size_t size, size_t nmemb,
-               apache_t *st)
+               void *user_data)
 {
        size_t len = size * nmemb;
+       apache_t *st;
+
+       st = user_data;
+       if (st == NULL)
+       {
+               ERROR ("apache plugin: apache_curl_callback: "
+                               "user_data pointer is NULL.");
+               return (0);
+       }
 
        if (len <= 0)
                return (len);