Fix in positioning of text label of node

lib/network/Node.js

@@ -878,7 +878,7 @@ Node.prototype._label = function (ctx, text, x, y, align, baseline, labelUnderNo
 
     var lines = text.split('\n');
     var lineCount = lines.length;
-    var fontSize = (Number(this.options.fontSize) + 4);
+    var fontSize = (Number(this.options.fontSize) + 4); // TODO: why is this +4 ?
     var yLine = y + (1 - lineCount) / 2 * fontSize;
     if (labelUnderNode == true) {
       yLine = y + (1 - lineCount) / (2 * fontSize);
@@ -893,7 +893,7 @@ Node.prototype._label = function (ctx, text, x, y, align, baseline, labelUnderNo
     var height = this.options.fontSize * lineCount;
     var left = x - width / 2;
     var top = y - height / 2;
-    if (ctx.textBaseline == "top") {
+    if (baseline == "top") {
       top += 0.5 * fontSize;
     }
     this.labelDimensions = {top:top,left:left,width:width,height:height,yLine:yLine};