X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Flogging.cpp;h=29d023c04ad577957aa3a1dbacc52fa0a47acb01;hp=b04bd9480ac717b82f34674b53d6c50edc9d3ea0;hb=65c92359634f672e5f472a5214719dabc7e20883;hpb=cd0b243a41af5c63f200a647bf435a50f03ad5d6

diff --git a/pv/logging.cpp b/pv/logging.cpp
index b04bd948..29d023c0 100644
--- a/pv/logging.cpp
+++ b/pv/logging.cpp
@@ -52,13 +52,15 @@ static void *prev_srd_log_cb_data;
 Logging::~Logging()
 {
 	qInstallMessageHandler(nullptr);
-	sr_log_callback_set(prev_sr_log_cb, prev_sr_log_cb_data);
-	prev_sr_log_cb = NULL;
-	prev_sr_log_cb_data = NULL;
+	if (prev_sr_log_cb)
+		sr_log_callback_set(prev_sr_log_cb, prev_sr_log_cb_data);
+	prev_sr_log_cb = nullptr;
+	prev_sr_log_cb_data = nullptr;
 #ifdef ENABLE_DECODE
-	srd_log_callback_set(prev_srd_log_cb, prev_srd_log_cb_data);
-	prev_srd_log_cb = NULL;
-	prev_srd_log_cb_data = NULL;
+	if (prev_srd_log_cb)
+		srd_log_callback_set(prev_srd_log_cb, prev_srd_log_cb_data);
+	prev_srd_log_cb = nullptr;
+	prev_srd_log_cb_data = nullptr;
 #endif
 
 	GlobalSettings::remove_change_handler(this);