fixed use of wrong constant, closes mitreid-connect#940

Author: jricher

openid-connect-server/src/main/java/org/mitre/openid/connect/token/TofuUserApprovalHandler.java

@@ -16,6 +16,11 @@
  *******************************************************************************/
 package org.mitre.openid.connect.token;
 
+import static org.mitre.openid.connect.request.ConnectRequestParameters.APPROVED_SITE;
+import static org.mitre.openid.connect.request.ConnectRequestParameters.PROMPT;
+import static org.mitre.openid.connect.request.ConnectRequestParameters.PROMPT_CONSENT;
+import static org.mitre.openid.connect.request.ConnectRequestParameters.PROMPT_SEPARATOR;
+
 import java.util.Calendar;
 import java.util.Collection;
 import java.util.Date;
@@ -47,10 +52,6 @@
 import com.google.common.base.Strings;
 import com.google.common.collect.Sets;
 
-import static org.mitre.openid.connect.request.ConnectRequestParameters.APPROVED_SITE;
-import static org.mitre.openid.connect.request.ConnectRequestParameters.PROMPT;
-import static org.mitre.openid.connect.request.ConnectRequestParameters.PROMPT_SEPARATOR;
-
 /**
  * Custom User Approval Handler implementation which uses a concept of a whitelist,
  * blacklist, and greylist.
@@ -132,7 +133,7 @@ public AuthorizationRequest checkForPreApproval(AuthorizationRequest authorizati
 // find out if we're supposed to force a prompt on the user or not
 String prompt = (String) authorizationRequest.getExtensions().get(PROMPT);
 List<String> prompts = Splitter.on(PROMPT_SEPARATOR).splitToList(Strings.nullToEmpty(prompt));
-if (!prompts.contains(PROMPT_SEPARATOR)) {
+if (!prompts.contains(PROMPT_CONSENT)) {
 // if the prompt parameter is set to "consent" then we can't use approved sites or whitelisted sites
 // otherwise, we need to check them below