[NaCl SDK] Compile for naclio for Bionic

native_client_sdk/src/libraries/nacl_io/socket/socket_node.cc

Index: native_client_sdk/src/libraries/nacl_io/socket/socket_node.cc
diff --git a/native_client_sdk/src/libraries/nacl_io/socket/socket_node.cc b/native_client_sdk/src/libraries/nacl_io/socket/socket_node.cc
index e296117b4836d16ed4801b34f7996e55a1f4fe9a..f246d24a2d1d90966ae29c3cee1c1695c1d1104a 100644
--- a/native_client_sdk/src/libraries/nacl_io/socket/socket_node.cc
+++ b/native_client_sdk/src/libraries/nacl_io/socket/socket_node.cc
@@ -276,14 +276,14 @@ Error SocketNode::SetSockOpt(int lvl,
       // SO_REUSEADDR is effectivly always on since we can't
       // disable it with PPAPI sockets. Just return success
       // here regardless.
-      if (len < sizeof(int))
+      if (static_cast<size_t>(len) < sizeof(int))
         return EINVAL;
       return 0;
     }
     case SO_LINGER: {
       // Not supported by the PPAPI interface but we preserve
       // the settings and pretend to support it.
-      if (len < sizeof(struct linger))
+      if (static_cast<size_t>(len) < sizeof(struct linger))
         return EINVAL;
       struct linger new_linger = *static_cast<const linger*>(optval);
       // Don't allow setting linger to be enabled until we
@@ -298,7 +298,7 @@ Error SocketNode::SetSockOpt(int lvl,
     case SO_KEEPALIVE: {
       // Not supported by the PPAPI interface but we preserve
       // the flag and pretend to support it.
-      if (len < sizeof(int))
+      if (static_cast<size_t>(len) < sizeof(int))
         return EINVAL;
       int value = *static_cast<const int*>(optval);
       keep_alive_ = value != 0;