SLING-4477 : JcrInstaller should not call Thread.interrupt()

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk/installer/providers/jcr@1664640 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/sling/installer/provider/jcr/impl/JcrInstaller.java b/src/main/java/org/apache/sling/installer/provider/jcr/impl/JcrInstaller.java
index 8fc5b3b..eec7e5d 100644
--- a/src/main/java/org/apache/sling/installer/provider/jcr/impl/JcrInstaller.java
+++ b/src/main/java/org/apache/sling/installer/provider/jcr/impl/JcrInstaller.java
@@ -217,7 +217,7 @@
 
         /** Used for synchronizing. */
         final Object lock = new Object();
-        boolean active = true;
+        volatile boolean active = true;
 
         StoppableThread() {
             synchronized (JcrInstaller.class) {