Fix check on subplot hasXY

Author: mdtusz

src/plot_api/plot_schema.js

@@ -286,7 +286,7 @@ function handleSubplotObjs(layoutAttributes) {
             var subplotRegistry = subplotsRegistry[subplotType],
                 isSubplotObj;
 
-            if(subplotType === 'cartesian') {
+            if(subplotType === 'cartesian' || subplotType === 'gl2d') {
                 isSubplotObj = (
                     subplotRegistry.attrRegex.x.test(k) ||
                     subplotRegistry.attrRegex.y.test(k)

src/plots/plots.js

@@ -140,7 +140,7 @@ plots.registerSubplot = function(_module) {
 
     var regexStart = '^',
         regexEnd = '([2-9]|[1-9][0-9]+)?$',
-        hasXY = (plotType === 'cartesian' || subplotsRegistry === 'gl2d');
+        hasXY = (plotType === 'cartesian' || plotType === 'gl2d');
 
     function makeRegex(mid) {
         return new RegExp(regexStart + mid + regexEnd);