Complete log buffer patch set

src/modules/sdlog2/logbuffer.c

@@ -148,5 +148,8 @@ void logbuffer_free(struct logbuffer_s *lb)
 {
 	if (lb->data) {
 		free(lb->data);
+		lb->write_ptr = 0;
+		lb->read_ptr = 0;
+		lb->data = NULL;
 	}
 }