Fixup bytebuffer usage

app/src/main/java/com/hippo/ehviewer/spider/Android14CoroutineHttpEngine.kt

@@ -45,7 +45,7 @@ class CronetRequest : AutoCloseable {
         override fun onReadCompleted(p0: UrlRequest, p1: UrlResponseInfo, p2: ByteBuffer) {
             p2.flip()
             mConsumer(p1, p2)
-            buffer.flip()
+            buffer.clear()
             request.read(buffer)
         }