refactor keys in unified hover legend mock

Author: archmoj

src/components/fx/hover.js

@@ -1029,13 +1029,14 @@ function createHoverText(hoverData, opts, gd) {
         if(hoverData.length === 0) return;
 
         // mock legend
+        var hoverlabel = fullLayout.hoverlabel;
         var mockLayoutIn = {
             showlegend: true,
             legend: {
-                title: {text: t0, font: fullLayout.hoverlabel.font},
-                font: fullLayout.hoverlabel.font,
-                bgcolor: fullLayout.hoverlabel.bgcolor,
-                bordercolor: fullLayout.hoverlabel.bordercolor,
+                title: {text: t0, font: hoverlabel.font},
+                font: hoverlabel.font,
+                bgcolor: hoverlabel.bgcolor,
+                bordercolor: hoverlabel.bordercolor,
                 borderwidth: 1,
                 tracegroupgap: 7,
                 traceorder: fullLayout.legend ? fullLayout.legend.traceorder : undefined,