HADOOP-15458. TestLocalFileSystem#testFSOutputStreamBuilder fails on Windows. Contributed by Xiao Liang.

(cherry picked from commit abc3e4bad9)

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestLocalFileSystem.java

@@ -689,7 +689,7 @@ public class TestLocalFileSystem {
     // and permission
     FSDataOutputStreamBuilder builder =
         fileSys.createFile(path);
-    builder.build();
+    try (FSDataOutputStream stream = builder.build()) {
       Assert.assertEquals("Should be default block size",
           builder.getBlockSize(), fileSys.getDefaultBlockSize());
       Assert.assertEquals("Should be default replication factor",
@@ -700,6 +700,7 @@ public class TestLocalFileSystem {
               IO_FILE_BUFFER_SIZE_DEFAULT));
       Assert.assertEquals("Should be default permission",
           builder.getPermission(), FsPermission.getFileDefault());
+    }
 
     // Test set 0 to replication, block size and buffer size
     builder = fileSys.createFile(path);