JCRVLT-342 close pom.xml correctly after retrieving version

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/commons/filevault-package-maven-plugin/trunk@1863646 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/test/java/org/apache/jackrabbit/filevault/maven/packaging/it/ProjectBuilder.java b/src/test/java/org/apache/jackrabbit/filevault/maven/packaging/it/ProjectBuilder.java
index 0b7252b..5e4930b 100644
--- a/src/test/java/org/apache/jackrabbit/filevault/maven/packaging/it/ProjectBuilder.java
+++ b/src/test/java/org/apache/jackrabbit/filevault/maven/packaging/it/ProjectBuilder.java
@@ -123,10 +123,10 @@
     private String getPluginVersion() {
         String pluginVersion  = System.getProperty("plugin.version");
         if (pluginVersion == null) {
-            try {
+            try (FileReader fileReader = new FileReader("pom.xml")) {
                 // try to read from project
                 MavenXpp3Reader reader = new MavenXpp3Reader();
-                Model model = reader.read(new FileReader("pom.xml"));
+                Model model = reader.read(fileReader);
                 pluginVersion = model.getVersion();
             } catch (IOException | XmlPullParserException e) {
                 log.error("Unable to read version from pom", e);