SSLClientSocket::IsConnected should care for internal buffers

net/base/nss_memio.c

Index: net/base/nss_memio.c
diff --git a/net/base/nss_memio.c b/net/base/nss_memio.c
index 4092c178c7ff1d49330d9232d5f92f055e3f4e2b..bd0471067f4e57e31b39d09889f0caa1bdeef378 100644
--- a/net/base/nss_memio.c
+++ b/net/base/nss_memio.c
@@ -402,6 +402,14 @@ int memio_GetReadParams(memio_Private *secret, char **buf)
     return memio_buffer_unused_contiguous(mb);
 }
 
+int memio_GetReadableBufferSize(memio_Private *secret)
+{
+    struct memio_buffer* mb = &((PRFilePrivate *)secret)->readbuf;
+    PR_ASSERT(mb->bufsize);
+
+    return memio_buffer_used_contiguous(mb);
+}
+
 void memio_PutReadResult(memio_Private *secret, int bytes_read)
 {
     struct memio_buffer* mb = &((PRFilePrivate *)secret)->readbuf;