Fixed HttpRequestHandlerImpl.

Author: donbeave

graphql-java-servlet/src/main/java/graphql/kickstart/servlet/HttpRequestHandlerImpl.java

@@ -55,7 +55,7 @@ private void execute(GraphQLInvocationInput invocationInput, HttpServletRequest
       if (configuration.getResponseCache() != null) {
         CachedResponse cachedResponse = null;
         try {
-          cachedResponse = configuration.getResponseCache().getCachedResponse(request, invocationInput);
+          cachedResponse = configuration.getResponseCache().get(request, invocationInput);
         } catch (Throwable t) {
           log.warn(t.getMessage(), t);
           log.warn("Ignore read from cache, unexpected error happened");