极光推送网络请求没有关闭

SDK版本：
jpush:3.1.7
jcore:1.2.6

```
E/StrictMode: A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
java.lang.Throwable: Explicit termination method 'close' not called
at dalvik.system.CloseGuard.open(CloseGuard.java:180)
at java.net.AbstractPlainSocketImpl.create(AbstractPlainSocketImpl.java:103)
at java.net.Socket.createImpl(Socket.java:464)
at java.net.Socket.getImpl(Socket.java:530)
at java.net.Socket.setSoSndTimeout(Socket.java:1194)
at com.android.okhttp.Connection.setTimeouts(Connection.java:508)
at com.android.okhttp.Connection.connectAndSetOwner(Connection.java:400)
at com.android.okhttp.OkHttpClient$1.connectAndSetOwner(OkHttpClient.java:130)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:356)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:273)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:474)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:126)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:257)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:218)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java)
at cn.jiguang.net.HttpUtils.a(Unknown Source)
at cn.jiguang.net.HttpUtils.httpPost(Unknown Source)
at cn.jiguang.d.d.h.a(Unknown Source)
at cn.jiguang.d.d.x.a(Unknown Source)
at cn.jiguang.d.d.aa.run(Unknown Source)
at cn.jiguang.d.h.w.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:761)