Fix crash while updating RGB parade and waveform

Closes #6349.
2021-09-02 21:52:59 -07:00
parent 38f15e1852
commit 0db17f99dd
2 changed files with 6 additions and 1 deletions
--- a/rtgui/histogrampanel.h
+++ b/rtgui/histogrampanel.h
@@ -169,6 +169,7 @@ protected:
    bool vect_hc_buffer_dirty, vect_hs_buffer_dirty;
    int waveform_scale;
    array2D<int> rwave, gwave, bwave, lwave;
+    MyRWMutex wave_mutex;
    std::vector<unsigned char> parade_buffer_r;
    std::vector<unsigned char> parade_buffer_g;
    std::vector<unsigned char> parade_buffer_b;