Fix null data in arc event listener

c3.js

@@ -4922,18 +4922,22 @@
                     return;
                 }
                 updated = $$.updateAngle(d);
+                if (updated) {
                     arcData = $$.convertToArcData(updated);
                     // transitions
                     $$.expandArc(updated.data.id);
                     $$.api.focus(updated.data.id);
                     $$.toggleFocusLegend(updated.data.id, true);
                     $$.config.data_onmouseover(arcData, this);
+                }
             } : null)
             .on('mousemove', config.interaction_enabled ? function (d) {
-                var updated = $$.updateAngle(d),
+                var updated = $$.updateAngle(d), arcData, selectedData;
+                if (updated) {
                     arcData = $$.convertToArcData(updated),
                     selectedData = [arcData];
                     $$.showTooltip(selectedData, this);
+                }
             } : null)
             .on('mouseout', config.interaction_enabled ? function (d) {
                 var updated, arcData;
@@ -4941,6 +4945,7 @@
                     return;
                 }
                 updated = $$.updateAngle(d);
+                if (updated) {
                     arcData = $$.convertToArcData(updated);
                     // transitions
                     $$.unexpandArc(updated.data.id);
@@ -4948,12 +4953,17 @@
                     $$.revertLegend();
                     $$.hideTooltip();
                     $$.config.data_onmouseout(arcData, this);
+                }
             } : null)
             .on('click', config.interaction_enabled ? function (d, i) {
-                var updated = $$.updateAngle(d),
+                var updated = $$.updateAngle(d), arcData;
+                if (updated) {
                     arcData = $$.convertToArcData(updated);
-                if ($$.toggleShape) { $$.toggleShape(this, arcData, i); }
+                    if ($$.toggleShape) {
+                        $$.toggleShape(this, arcData, i);
+                    }
                     $$.config.data_onclick.call($$.api, arcData, this);
+                }
             } : null)
             .each(function () { $$.transiting = true; })
             .transition().duration(duration)

src/arc.js

@@ -265,18 +265,22 @@ c3_chart_internal_fn.redrawArc = function (duration, durationForExit, withTransf
                 return;
             }
             updated = $$.updateAngle(d);
+            if (updated) {
                 arcData = $$.convertToArcData(updated);
                 // transitions
                 $$.expandArc(updated.data.id);
                 $$.api.focus(updated.data.id);
                 $$.toggleFocusLegend(updated.data.id, true);
                 $$.config.data_onmouseover(arcData, this);
+            }
         } : null)
         .on('mousemove', config.interaction_enabled ? function (d) {
-            var updated = $$.updateAngle(d),
+            var updated = $$.updateAngle(d), arcData, selectedData;
+            if (updated) {
                 arcData = $$.convertToArcData(updated),
                 selectedData = [arcData];
                 $$.showTooltip(selectedData, this);
+            }
         } : null)
         .on('mouseout', config.interaction_enabled ? function (d) {
             var updated, arcData;
@@ -284,6 +288,7 @@ c3_chart_internal_fn.redrawArc = function (duration, durationForExit, withTransf
                 return;
             }
             updated = $$.updateAngle(d);
+            if (updated) {
                 arcData = $$.convertToArcData(updated);
                 // transitions
                 $$.unexpandArc(updated.data.id);
@@ -291,12 +296,17 @@ c3_chart_internal_fn.redrawArc = function (duration, durationForExit, withTransf
                 $$.revertLegend();
                 $$.hideTooltip();
                 $$.config.data_onmouseout(arcData, this);
+            }
         } : null)
         .on('click', config.interaction_enabled ? function (d, i) {
-            var updated = $$.updateAngle(d),
+            var updated = $$.updateAngle(d), arcData;
+            if (updated) {
                 arcData = $$.convertToArcData(updated);
-            if ($$.toggleShape) { $$.toggleShape(this, arcData, i); }
+                if ($$.toggleShape) {
+                    $$.toggleShape(this, arcData, i);
+                }
                 $$.config.data_onclick.call($$.api, arcData, this);
+            }
         } : null)
         .each(function () { $$.transiting = true; })
         .transition().duration(duration)