fix test

test/components/structures/auth/Registration-test.js

@@ -69,9 +69,10 @@ describe('Registration', function() {
 
         const root = render();
 
-        // Set non-empty flow & matrixClient to get past the loading spinner
+        // Set non-empty flows, capabilities & matrixClient to get past the loading spinner
         root.setState({
             flows: [],
+            serverCaps: {},
             matrixClient: {},
             busy: false,
         });