take away collaboration from collabsToRemove before role edition

wise-webapp/src/main/java/com/wisemapping/rest/MindmapController.java

@@ -412,17 +412,17 @@ public class MindmapController extends BaseController {
                 throw new IllegalArgumentException(roleStr + " is not a valid role");
             }
 
+            // Remove from the list of pendings to remove ...
+            if (collaboration != null) {
+                collabsToRemove.remove(collaboration);
+            }
+
             // Is owner ?
             final CollaborationRole role = CollaborationRole.valueOf(roleStr.toUpperCase());
             if (role != CollaborationRole.OWNER) {
                 mindmapService.addCollaboration(mindMap, restCollab.getEmail(), role, restCollabs.getMessage());
             }
 
-            // Remove from the list of pendings to remove ...
-            if (collaboration != null) {
-                collabsToRemove.remove(collaboration);
-            }
-
         }
 
         // Remove all collaborations that no applies anymore ..