change visibility of the resolution context

Change-Id: I87299000aab20d8bc6de2d7afc59ddae35f2eb58

plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/resolver/ThreadedModelResolver.java

diff --git a/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/resolver/ThreadedModelResolver.java b/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/resolver/ThreadedModelResolver.java
index 5ebdb50..7db09dd 100644
--- a/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/resolver/ThreadedModelResolver.java
+++ b/plugins/org.eclipse.emf.compare.ide.ui/src/org/eclipse/emf/compare/ide/ui/internal/logical/resolver/ThreadedModelResolver.java
@@ -56,7 +56,7 @@
  */
 public class ThreadedModelResolver extends AbstractModelResolver implements IGraphConsumer {
 
-	private IResolutionContext context;
+	protected IResolutionContext context;
 
 	/**
 	 * The URI Graph instance.