engine: free after log worker thread has been stopped

Signed-off-by: Hiroyuki Hasebe <[email protected]>

Author: hiroyha1

src/flb_config.c

@@ -390,14 +390,14 @@ void flb_config_exit(struct flb_config *config)
     struct mk_list *head;
     struct flb_cf *cf;
 
-    if (config->log_file) {
-        flb_free(config->log_file);
-    }
-
     if (config->log) {
         flb_log_destroy(config->log, config);
     }
 
+    if (config->log_file) {
+        flb_free(config->log_file);
+    }
+
     if (config->parsers_file) {
         flb_free(config->parsers_file);
     }