Avoid segfaults when LoadingThread's resource is cleared

diff --git a/source/resourcemanager.cpp b/source/resourcemanager.cpp
index c9cbcbb713c7126ba54025405e3ec4ccc088424f..999b86c190451dae5a8d33967a3c461c5282862c 100644 (file)
--- a/source/resourcemanager.cpp
+++ b/source/resourcemanager.cpp
@@ -295,9 +295,12 @@ void ResourceManager::LoadingThread::set_resource(ManagedResource *r)
        }
 
        resource = r;
-       resource->start_loading();
-       state = BUSY;
-       sem.signal();
+       if(resource)
+       {
+               resource->start_loading();
+               state = BUSY;
+               sem.signal();
+       }
 }
 
 void ResourceManager::LoadingThread::sync()