MINOR: Fix Spotless formatting in TestCompressionCodec (#3551)

Consolidate the try-with-resources allocator declaration in
testLz4RawHeapDecompressorCanCopyLargePage onto a single line so the
file passes spotless:check. Master CI has been failing on this since
GH-3478 (#3486).

parquet-hadoop/src/test/java/org/apache/parquet/hadoop/codec/TestCompressionCodec.java

diff --git a/parquet-hadoop/src/test/java/org/apache/parquet/hadoop/codec/TestCompressionCodec.java b/parquet-hadoop/src/test/java/org/apache/parquet/hadoop/codec/TestCompressionCodec.java
index ae2bd87..2db4d77 100644
--- a/parquet-hadoop/src/test/java/org/apache/parquet/hadoop/codec/TestCompressionCodec.java
+++ b/parquet-hadoop/src/test/java/org/apache/parquet/hadoop/codec/TestCompressionCodec.java
@@ -195,8 +195,7 @@
     final byte[] raw = new byte[size];
     new Random(42).nextBytes(raw);
 
-    try (TrackingByteBufferAllocator allocator =
-            TrackingByteBufferAllocator.wrap(new DirectByteBufferAllocator());
+    try (TrackingByteBufferAllocator allocator = TrackingByteBufferAllocator.wrap(new DirectByteBufferAllocator());
         ByteBufferReleaser releaser = new ByteBufferReleaser(allocator)) {
       CodecFactory heapCodecFactory = new CodecFactory(new Configuration(), pageSize);
       BytesInputCompressor compressor = heapCodecFactory.getCompressor(CompressionCodecName.LZ4_RAW);