lib/shoes/swt/common/resource.rb in shoes-swt-4.0.0.pre10 vs lib/shoes/swt/common/resource.rb in shoes-swt-4.0.0.pre11

@@ -11,10 +11,10 @@
           track_graphics_context(graphics_context)
         end
 
         def dispose_previous_contexts
           @graphic_contexts ||= []
-          @graphic_contexts.each { |g| g.dispose if g }
+          @graphic_contexts.each { |g| g&.dispose }
           @graphic_contexts.clear
         end
 
         def set_defaults_on_context(graphics_context)
           graphics_context.set_alpha OPAQUE