Prevent null pointer access

Thanks to Ingo for fixing the segfault.
2020-09-28 22:17:49 -07:00
parent be858363a6
commit b8af429f0e
2 changed files with 4 additions and 2 deletions
--- a/rtengine/improccoordinator.h
+++ b/rtengine/improccoordinator.h
@@ -469,7 +469,9 @@ public:
            hListener->setObservable(nullptr);
        }
        hListener = h;
-        h->setObservable(this);
+        if (h) {
+            h->setObservable(this);
+        }
    }
    void setAutoCamListener  (AutoCamListener* acl) override
    {