reducers: Fix workspacePendingChanges variable initialization
reducers: Fix workspacePendingChanges variable initialization

Commit ad4d916dcad3d2af3a2e8f98cd8ed3598616ee5f missed this specific
occurance.

Closes #605

jkozol/welder-web,jkozol/welder-web,weldr/welder-web,weldr/welder-web,weldr/welder-web,weldr/welder-web,jkozol/welder-web,jkozol/welder-web