Small fix to trust agent item in security settings.

import android.app.Activity;

import android.app.AlertDialog;

import android.app.admin.DevicePolicyManager;

import android.content.ComponentName;

import android.content.Context;

import android.content.DialogInterface;

import android.content.Intent;

import android.security.KeyStore;

import android.service.trust.TrustAgentService;

import android.telephony.TelephonyManager;

import android.text.TextUtils;

import android.util.Log;

import com.android.internal.widget.LockPatternUtils;

            PackageManager pm = getPackageManager();

            List<ResolveInfo> resolveInfos = pm.queryIntentServices(TRUST_AGENT_INTENT,

                    PackageManager.GET_META_DATA);

            List<ComponentName> enabledTrustAgents = mLockPatternUtils.getEnabledTrustAgents();

            if (enabledTrustAgents != null && !enabledTrustAgents.isEmpty()) {

                for (ResolveInfo resolveInfo : resolveInfos) {

                    if (resolveInfo.serviceInfo == null) continue;

                    if (!TrustAgentUtils.checkProvidePermission(resolveInfo, pm)) continue;

                    TrustAgentUtils.TrustAgentComponentInfo trustAgentComponentInfo =

                            TrustAgentUtils.getSettingsComponent(pm, resolveInfo);

                    if (trustAgentComponentInfo.componentName == null ||

                        trustAgentComponentInfo.title == null ||

                        trustAgentComponentInfo.title == "") continue;

                            !enabledTrustAgents.contains(trustAgentComponentInfo.componentName) ||

                            TextUtils.isEmpty(trustAgentComponentInfo.title)) continue;

                    Preference trustAgentPreference =

                            new Preference(securityCategory.getContext());

                    trustAgentPreference.setKey(KEY_TRUST_AGENT);

                    break; // Only render the first one.

                }

            }

        }

        return root;

    }