shill: openvpn: Fix typo in management server unit test.

BUG=none
TEST=unit tests

Change-Id: I6f359e410b43baa0a5e9dcf0456597d257eec4e5
Reviewed-on: https://gerrit.chromium.org/gerrit/25008
Tested-by: Darin Petkov <petkov@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Ready: Darin Petkov <petkov@chromium.org>
diff --git a/openvpn_management_server_unittest.cc b/openvpn_management_server_unittest.cc
index e9d6cc2..3388ddc 100644
--- a/openvpn_management_server_unittest.cc
+++ b/openvpn_management_server_unittest.cc
@@ -43,7 +43,7 @@
 
   void SetSockets() { server_.sockets_ = &sockets_; }
   void SetDispatcher() { server_.dispatcher_ = &dispatcher_; }
-  void ExpectNotStarted() { !server_.IsStarted(); }
+  void ExpectNotStarted() { EXPECT_FALSE(server_.IsStarted()); }
 
   void SetConnectedSocket() {
     server_.connected_socket_ = kConnectedSocket;