Merge pull request #3484 from graphql-java/deffered-callcontext-bette…

…r-allocation

Does not allocate a default deferred context that is thrown away on transform

src/main/java/graphql/execution/ExecutionStrategyParameters.java

@@ -114,7 +114,7 @@ public static class Builder {
         ResultPath path = ResultPath.rootPath();
         MergedField currentField;
         ExecutionStrategyParameters parent;
-        DeferredCallContext deferredCallContext = new DeferredCallContext();
+        DeferredCallContext deferredCallContext;
 
         /**
          * @see ExecutionStrategyParameters#newParameters()
@@ -188,6 +188,9 @@ public Builder deferredCallContext(DeferredCallContext deferredCallContext) {
         }
 
         public ExecutionStrategyParameters build() {
+            if (deferredCallContext == null) {
+                deferredCallContext = new DeferredCallContext();
+            }
             return new ExecutionStrategyParameters(executionStepInfo, source, localContext, fields, nonNullableFieldValidator, path, currentField, parent, deferredCallContext);
         }
     }