Bug 502968 - [SysML 1.4][Moka] Conflict between SysML 1.4 and Moka

 - papyrusViewStyle isn't a mandatory property
 ( not present in old diagram) 

Change-Id: I9d543c77de3385abf643f40b6d650be9b3783123
Signed-off-by: Benoit Maggi <benoit.maggi@cea.fr>
diff --git a/diagram/org.eclipse.papyrus.sysml14.diagram.common/src/org/eclipse/papyrus/sysml14/diagram/common/internal/edit/provider/RemoveAppliedStereotypeCommentEditPolicyProvider.java b/diagram/org.eclipse.papyrus.sysml14.diagram.common/src/org/eclipse/papyrus/sysml14/diagram/common/internal/edit/provider/RemoveAppliedStereotypeCommentEditPolicyProvider.java
index d5c10f5..bc58b35 100644
--- a/diagram/org.eclipse.papyrus.sysml14.diagram.common/src/org/eclipse/papyrus/sysml14/diagram/common/internal/edit/provider/RemoveAppliedStereotypeCommentEditPolicyProvider.java
+++ b/diagram/org.eclipse.papyrus.sysml14.diagram.common/src/org/eclipse/papyrus/sysml14/diagram/common/internal/edit/provider/RemoveAppliedStereotypeCommentEditPolicyProvider.java
@@ -57,15 +57,17 @@
 					if (model instanceof View){
 						View view = (View) model;
 						PapyrusViewStyle papyrusViewStyle = DiagramUtils.getPapyrusViewStyle(view.getDiagram());
-						PapyrusView configuration = papyrusViewStyle.getConfiguration();
-						if (configuration != null){
-							EList<Category> categories = configuration.getCategories();
-							for (Category category : categories) {
-								if (ViewpointUtil.SYSML14_CATEGORY_NAME.equals(category.getName())){
-									editPart.installEditPolicy(AppliedStereotypeCommentEditPolicy.APPLIED_STEREOTYPE_COMMENT, null);
-								}						
-							}								
-						}				
+						if (papyrusViewStyle != null){
+							PapyrusView configuration = papyrusViewStyle.getConfiguration();
+							if (configuration != null){
+								EList<Category> categories = configuration.getCategories();
+								for (Category category : categories) {
+									if (ViewpointUtil.SYSML14_CATEGORY_NAME.equals(category.getName())){
+										editPart.installEditPolicy(AppliedStereotypeCommentEditPolicy.APPLIED_STEREOTYPE_COMMENT, null);
+									}						
+								}								
+							}							
+						}
 					}
 				}
 			}