Fixed bug 10889

Fixed bug #10889

Variable 'auth' might not have been initialized

Author: marysia16122

modules/swagger-codegen/src/main/resources/Java/libraries/feign/ApiClient.mustache

@@ -53,7 +53,7 @@ public class ApiClient {
     this();
     for(String authName : authNames) {
       {{#hasAuthMethods}}
-      RequestInterceptor auth;
+      RequestInterceptor auth = null;
       {{#authMethods}}if ("{{name}}".equals(authName)) {
       {{#isBasic}}
         auth = new HttpBasicAuth();