Removed static modifier from initialized field in ApiListingResource

Author: blop

modules/swagger-jaxrs/src/main/java/io/swagger/jaxrs/listing/ApiListingResource.java

@@ -36,7 +36,7 @@
 
 @Path("/")
 public class ApiListingResource {
-    static boolean initialized = false;
+    boolean initialized = false;
     Logger LOGGER = LoggerFactory.getLogger(ApiListingResource.class);
     @Context
     ServletContext context;