fixed logger variable name

Author: jricher

openid-connect-server/src/main/java/org/mitre/oauth2/service/impl/DefaultIntrospectionResultAssembler.java

@@ -59,7 +59,7 @@ public Map<String, Object> assembleFrom(OAuth2AccessTokenEntity accessToken, Use
 result.put(EXPIRES_AT, dateFormat.valueToString(accessToken.getExpiration()));
 result.put(EXP, accessToken.getExpiration().getTime() / 1000L);
 } catch (ParseException e) {
-log.error("Parse exception in token introspection", e);
+logger.error("Parse exception in token introspection", e);
 }
 }
 
@@ -95,7 +95,7 @@ public Map<String, Object> assembleFrom(OAuth2RefreshTokenEntity refreshToken, U
 result.put(EXPIRES_AT, dateFormat.valueToString(refreshToken.getExpiration()));
 result.put(EXP, refreshToken.getExpiration().getTime() / 1000L);
 } catch (ParseException e) {
-log.error("Parse exception in token introspection", e);
+logger.error("Parse exception in token introspection", e);
 }
 }