Fix callbacks signature

src/pclcli.cpp

@@ -213,19 +213,19 @@ static void status_change(pstatus_t* status) {
     clib::pclcli::get_lib().status_callback_((int)status->status, status2string(status->status));
 }
 
-int clib::pclcli::start_crypto (const char *pass, void *rep) {
+int clib::pclcli::start_crypto(const char *pass, void **rep) {
   get_lib().crypto_pass_ = pass;
   return lib_setup_crypto();
 }
 
-int clib::pclcli::stop_crypto (const char* path, void * rep) {
+int clib::pclcli::stop_crypto(const char* path, void **rep) {
   get_lib().crypto_on_ = false;
   return psync_crypto_stop();
 }
 
-int clib::pclcli::list_sync_folders (const char *path, void *rep) {
+int clib::pclcli::list_sync_folders(const char *path, void **rep) {
   psync_folder_list_t *folders = psync_get_sync_list();
-  rep = psync_malloc(sizeof(folders));
+  *rep = psync_malloc(sizeof(folders));
   memcpy(rep, folders, sizeof(folders));
   return 0;
 }

src/psync/poverlay.c

@@ -106,12 +106,13 @@ void get_answer_to_request(message *request, message *response) {
     message *rep = NULL;
 
     if (callbacks[ind]) {
-      if ((ret = callbacks[ind](request->value, rep)) == 0) {
+      if ((ret = callbacks[ind](request->value, &rep)) == 0) {
         if (rep) {
           psync_free(response);
           response = rep;
-        } else
+        } else {
           response->type = 0;
+        }
       } else {
         response->type = ret;
         memcpy(response->value, "No.", 4);

src/psync/poverlay.h

@@ -28,7 +28,7 @@ typedef struct message_ {
  *
  * Callback to be registered to be called from file manager extension.
  */
-typedef int (*poverlay_callback)(const char *path, void *rep);
+typedef int (*poverlay_callback)(const char *path, void **rep);
 
 /*! \brief The main overlay loop.
  *