[FELIX-5217] fileinstall: Improve WatcherScanner performance

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1735196 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/fileinstall/src/main/java/org/apache/felix/fileinstall/internal/WatcherScanner.java b/fileinstall/src/main/java/org/apache/felix/fileinstall/internal/WatcherScanner.java
index 532356f..cca84f0 100644
--- a/fileinstall/src/main/java/org/apache/felix/fileinstall/internal/WatcherScanner.java
+++ b/fileinstall/src/main/java/org/apache/felix/fileinstall/internal/WatcherScanner.java
@@ -97,7 +97,7 @@
             }
             for (File file : removed) {
                 // Make sure we'll handle a file that has been deleted
-                files.addAll(removed);
+                files.add(file);
                 // Remove no longer used checksums
                 lastChecksums.remove(file);
                 storedChecksums.remove(file);