Merge pull request #533 from csmith/master

Don't block for the EDT when an error is raised.

ui_swing/src/main/java/com/dmdirc/addons/ui_swing/components/statusbar/ErrorPanel.java

@@ -147,12 +147,12 @@ public class ErrorPanel extends StatusbarPopupPanel<JLabel> implements ErrorsDia
 
     @Override
     public void errorDeleted(final DisplayableError error) {
-        UIUtilities.invokeAndWait(this::checkErrors);
+        UIUtilities.invokeLater(this::checkErrors);
     }
 
     @Override
     public void errorAdded(final DisplayableError error) {
-        UIUtilities.invokeAndWait(this::checkErrors);
+        UIUtilities.invokeLater(this::checkErrors);
     }
 
     @Override