PackageManagerService: fix NPE while renaming foreign dex markers.

            // We don't expect installation to fail beyond this point

            if (pkgSetting.pkg != null) {

                maybeRenameForeignDexMarkers(pkgSetting.pkg, pkg, user);

                // Note that |user| might be null during the initial boot scan. If a codePath

                // for an app has changed during a boot scan, it's due to an app update that's

                // part of the system partition and marker changes must be applied to all users.

                maybeRenameForeignDexMarkers(pkgSetting.pkg, pkg,

                    (user != null) ? user : UserHandle.ALL);

            }

            // Add the new setting to mSettings