Issue #1001 synchronize paint with add.

Former-commit-id: 2c9737ca5c [formerly 2c9737ca5c [formerly 825c08e6ce89b0c4b042c9e85f7abbc7b9a675ef]]
Former-commit-id: 798d26e954
Former-commit-id: e9cde98072

cave/com.raytheon.viz.lightning/src/com/raytheon/viz/lightning/LightningResource.java

@@ -359,6 +359,7 @@ public class LightningResource extends
                 .get(this.lastPaintedTime);
 
         if (cacheObject != null) {
+            synchronized (cacheObject.getMetadata()) {
                 LightningFrame bundle = cacheObject.getObjectAsync();
                 if (bundle == null) {
                     needsUpdate = true;
@@ -412,6 +413,7 @@ public class LightningResource extends
                     }
                 }
             }
+        }
 
         font.setMagnification(magnification);
         List<DrawableString> strings = new ArrayList<DrawableString>();