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gtk: check NULL before unref

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This commit is contained in:
huangqinjin 2017-06-29 11:35:34 +08:00 committed by GitHub
parent 324851882a
commit aa75b6067c
1 changed files with 4 additions and 2 deletions
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6
modules/highgui/src/window_gtk.cpp
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@ -951,7 +951,8 @@ static gboolean cvImageWidget_draw(GtkWidget* widget, cairo_t *cr, gpointer data
}
cairo_paint(cr);
g_object_unref(pixbuf);
if(pixbuf)
g_object_unref(pixbuf);
return TRUE;
}
@ -1005,7 +1006,8 @@ static gboolean cvImageWidget_expose(GtkWidget* widget, GdkEventExpose* event, g
}
cairo_paint(cr);
g_object_unref(pixbuf);
if(pixbuf)
g_object_unref(pixbuf);
cairo_destroy(cr);
return TRUE;
}