Crash fix.

BUG=http://code.google.com/p/chromium-os/issues/detail?id=8641
TEST=Disable cellular; enable cellular; activate cellular network. Verify no crash.

Review URL: http://codereview.chromium.org/4374003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@64962 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/status/network_menu.cc

@@ -329,8 +329,9 @@ void NetworkMenu::ActivatedAt(int index) {
       // TODO(stevenjb): Show notification.
     } else if (cellular->activation_state() != ACTIVATION_STATE_ACTIVATED) {
       ActivateCellular(cellular);
-    } else if (cellular->service_path() ==
-               cros->cellular_network()->service_path()) {
+    } else if (cros->cellular_network() &&
+               (cellular->service_path() ==
+                cros->cellular_network()->service_path())) {
       // Show the config settings for the cellular network.
       ShowCellular(cellular, false);
     } else {