Add additional test case to cover "var"

pmd-java/src/main/resources/category/java/codestyle.xml

@@ -2135,7 +2135,8 @@ E.g. `int[] x = new int[] { 1, 2, 3 };` can be written as `int[] x = { 1, 2, 3 }
         <properties>
             <property name="xpath">
                 <value><![CDATA[
-//VariableDeclarator
+//(LocalVariableDeclaration[@TypeInferred = false()] | FieldDeclaration)
+  /VariableDeclarator
     [VariableDeclaratorId[@ArrayType = true()]]
     [VariableInitializer/Expression/PrimaryExpression/PrimaryPrefix/AllocationExpression/ArrayDimsAndInits/ArrayInitializer]
                 ]]></value>

pmd-java/src/test/resources/net/sourceforge/pmd/lang/java/rule/codestyle/xml/UseShortArrayInitializer.xml

@@ -77,6 +77,19 @@ public class UseShortArrayExample {
     private int[] f2 = new int[] {1,2,3}, f3 = new int[] { 4,5,6 };
 
     private int[] good = { 1,2,3 };
+}
+        ]]></code>
+    </test-code>
+
+    <test-code>
+        <description>array initialization with var</description>
+        <expected-problems>0</expected-problems>
+        <code><![CDATA[
+public class UseShortArrayExample {
+    public void foo() {
+        var ar1 = new int[] { 1, 2 };
+        //var ar2 = { 1, 2 }; // this is actually a compile-time error and is forbidden. See JLS 14.4.
+    }
 }
         ]]></code>
     </test-code>