From 2f3d0085e0b60fbab87b4b88bd986dba95bcd7b0 Mon Sep 17 00:00:00 2001
From: Alex 'AdUser' Z <ad_user@runbox.com>
Date: Mon, 25 Jan 2021 12:58:52 +1000
Subject: [PATCH] * f2b_*_destroy() : fixes

---
 src/backend.c | 7 +++++--
 src/filter.c  | 7 +++++--
 src/source.c  | 7 +++++--
 3 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/src/backend.c b/src/backend.c
index 13d4190..2752cc0 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -121,8 +121,11 @@ f2b_backend_init(f2b_backend_t *backend, f2b_config_section_t *config) {
 void
 f2b_backend_destroy(f2b_backend_t *backend) {
   if (!backend) return;
-  backend->destroy(backend->cfg);
-  dlclose(backend->h);
+  if (backend->h) {
+    if (backend->cfg)
+      backend->destroy(backend->cfg);
+    dlclose(backend->h);
+  }
   free(backend);
 }
 
diff --git a/src/filter.c b/src/filter.c
index 1a8aba3..601cd3d 100644
--- a/src/filter.c
+++ b/src/filter.c
@@ -180,8 +180,11 @@ f2b_filter_init(f2b_filter_t *filter, f2b_config_section_t *config) {
 void
 f2b_filter_destroy(f2b_filter_t *filter) {
   if (!filter) return;
-  filter->destroy(filter->cfg);
-  dlclose(filter->h);
+  if (filter->h) {
+    if (filter->cfg)
+      filter->destroy(filter->cfg);
+    dlclose(filter->h);
+  }
   free(filter);
 }
 
diff --git a/src/source.c b/src/source.c
index ba2375e..a36c20a 100644
--- a/src/source.c
+++ b/src/source.c
@@ -117,8 +117,11 @@ f2b_source_init(f2b_source_t *source, f2b_config_section_t *config) {
 void
 f2b_source_destroy(f2b_source_t *source) {
   if (!source) return;
-  source->destroy(source->cfg);
-  dlclose(source->h);
+  if (source->h) {
+    if (source->cfg)
+      source->destroy(source->cfg);
+    dlclose(source->h);
+  }
   free(source);
 }