Fix the return value of switch to last ime.

    public boolean switchToLastInputMethod(IBinder token) {

        synchronized (mMethodMap) {

            Pair<String, String> lastIme = mSettings.getLastInputMethodAndSubtypeLocked();

            if (lastIme != null) {

                InputMethodInfo imi = mMethodMap.get(lastIme.first);

                if (imi != null) {

            final Pair<String, String> lastIme = mSettings.getLastInputMethodAndSubtypeLocked();

            if (lastIme == null) return false;

            final InputMethodInfo lastImi = mMethodMap.get(lastIme.first);

            if (lastImi == null) return false;

            final boolean imiIdIsSame = lastImi.getId().equals(mCurMethodId);

            final int lastSubtypeHash = Integer.valueOf(lastIme.second);

            // If the last IME is the same as the current IME and the last subtype is not defined,

            // there is no need to switch to the last IME.

            if (imiIdIsSame && lastSubtypeHash == NOT_A_SUBTYPE_ID) return false;

            int currentSubtypeHash = mCurrentSubtype == null ? NOT_A_SUBTYPE_ID

                    : mCurrentSubtype.hashCode();

            if (!imiIdIsSame || lastSubtypeHash != currentSubtypeHash) {

                if (DEBUG) {

                    Slog.d(TAG, "Switch to: " + lastImi.getId() + ", " + lastIme.second + ", from: "

                            + mCurMethodId + ", " + currentSubtypeHash);

                }

                setInputMethodWithSubtypeId(token, lastIme.first, getSubtypeIdFromHashCode(

                            imi, Integer.valueOf(lastIme.second)));

                        lastImi, lastSubtypeHash));

                return true;

            }

            }

            return false;

        }

    }