remove unnecessary null check

Author: slievrly

src/main/java/org/apache/ibatis/parsing/XNode.java

@@ -53,7 +53,7 @@ public XNode newXNode(Node node) {
 
   public XNode getParent() {
     Node parent = node.getParentNode();
-    if (parent == null || !(parent instanceof Element)) {
+    if (!(parent instanceof Element)) {
       return null;
     } else {
       return new XNode(xpathParser, parent, variables);
@@ -63,7 +63,7 @@ public XNode getParent() {
   public String getPath() {
     StringBuilder builder = new StringBuilder();
     Node current = node;
-    while (current != null && current instanceof Element) {
+    while (current instanceof Element) {
       if (current != node) {
         builder.insert(0, "/");
       }
@@ -385,4 +385,4 @@ private String getBodyData(Node child) {
     return null;
   }
 
-}
+}