Close files after reading them

avoids running out of file descriptors

Signed-off-by: Chris Dearman <chris@mips.com>
Change-Id: Id46c190474a0d440325a15f1182e578ce888b1ec
diff --git a/tools/vm-tests-tf/src/util/build/BuildDalvikSuite.java b/tools/vm-tests-tf/src/util/build/BuildDalvikSuite.java
index dae417f..bd688fe 100644
--- a/tools/vm-tests-tf/src/util/build/BuildDalvikSuite.java
+++ b/tools/vm-tests-tf/src/util/build/BuildDalvikSuite.java
@@ -650,6 +650,7 @@
                 FileReader reader = new FileReader(file);
                 char[] charContents = new char[(int) file.length()];
                 reader.read(charContents);
+                reader.close();
                 String contents = new String(charContents);
                 if (contents.equals(content)) {
                     // System.out.println("skipping identical: "