Use correct variable name
Use correct variable name

From https://github.com/matrix-org/matrix-js-sdk/pull/401

matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,krombel/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,matrix-org/matrix-js-sdk