Add missing check

Author: armano2

lib/rules/computed-property-return.js

@@ -65,6 +65,7 @@ function create (context) {
         forbiddenNodes.forEach(el => {
           if (
             el.node &&
+            cp.value &&
             el.node.loc.start.line >= cp.value.loc.start.line &&
             el.node.loc.end.line <= cp.value.loc.end.line
           ) {