Fix NPE in onDestroy() when launched without args

The previous fix corrects startup, but crashes in
onDestroy because of null value assumed to be
initialized.

Bug: 201719995
Test: adb shell am start com.android.systemui/.usb.UsbResolverActivity
Change-Id: Ie255ece9e73db71cbb4468c59db6de79d8f659b5

core/java/com/android/internal/app/ResolverActivity.java

@@ -901,7 +901,8 @@ public class ResolverActivity extends Activity implements
         if (!isChangingConfigurations() && mPickOptionRequest != null) {
             mPickOptionRequest.cancel();
         }
-        if (mMultiProfilePagerAdapter.getActiveListAdapter() != null) {
+        if (mMultiProfilePagerAdapter != null
+                && mMultiProfilePagerAdapter.getActiveListAdapter() != null) {
             mMultiProfilePagerAdapter.getActiveListAdapter().onDestroy();
         }
     }