Changes

This is an error found after use of Robocop frequently, but once it has happened, Fennec itself continues to crash. To fix it, simply uninstall and reinstall. This does not occur of frequent use of Robocop, as I have run 30 iterations of just robocop without it throwing this error.  To uninstall, reinstall, and run tests: <pre>adb uninstall org.mozilla.roboexample.testmake -C $OBJDIR mochitest-robocop</pre>