lint long line

Author: etpinard

src/plots/mapbox/mapbox.js

@@ -96,7 +96,8 @@ proto.createMap = function(calcData, fullLayout, resolve, reject) {
     });
 
     // clear navigation container
-    var controlContainer = this.div.getElementsByClassName(constants.controlContainerClassName)[0];
+    var className = constants.controlContainerClassName,
+        controlContainer = this.div.getElementsByClassName(className)[0];
     this.div.removeChild(controlContainer);
 
     self.rejectOnError(reject);