[hotfix-6279][redis] resolve zset's score type convent error

Author: dujie

flinkx-connectors/flinkx-connector-redis/src/main/java/com/dtstack/flinkx/connector/redis/sink/RedisOutputFormatBuilder.java

@@ -76,10 +76,10 @@ protected void checkFormat() {
                             .append("\n");
                 }
             }
+        }
 
-            if (sb.length() > 0) {
-                throw new IllegalArgumentException("\n" + sb.toString());
-            }
+        if (sb.length() > 0) {
+            throw new IllegalArgumentException("\n" + sb);
         }
     }
 }