Make the dynref bool operator constant.

diff --git a/include/dynref.h b/include/dynref.h
index 8d55d10aac2d9be0bebc6f03e670fdd5377aef36..2436720aa3976d934d7e5727b67bcd11ecbaae91 100644 (file)
--- a/include/dynref.h
+++ b/include/dynref.h
@@ -52,7 +52,7 @@ class CoreExport dynamic_reference_base : public interfacebase, public insp::int
        void SetCaptureHook(CaptureHook* h) { hook = h; }
 
        void check();
-       operator bool() { return (value != NULL); }
+       operator bool() const { return (value != NULL); }
        static void reset_all();
 };