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-rw-r--r--libs/canvas/canvas/wave_view.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/libs/canvas/canvas/wave_view.h b/libs/canvas/canvas/wave_view.h
index e9df823a9c..51c14c1d2e 100644
--- a/libs/canvas/canvas/wave_view.h
+++ b/libs/canvas/canvas/wave_view.h
@@ -401,6 +401,7 @@ public:
static gint drawing_thread_should_quit;
static Glib::Threads::Mutex request_queue_lock;
+ static Glib::Threads::Mutex current_image_lock;
static Glib::Threads::Cond request_cond;
static Glib::Threads::Thread* _drawing_thread;
typedef std::set<WaveView const *> DrawingRequestQueue;