Remove unnecessary use of volatile in ChunkedInput implementations. See #389

src/main/java/org/jboss/netty/handler/stream/ChunkedFile.java

@@ -36,7 +36,7 @@ public class ChunkedFile implements ChunkedInput {
     private final long startOffset;
     private final long endOffset;
     private final int chunkSize;
-    private volatile long offset;
+    private long offset;
 
     /**
      * Creates a new instance that fetches data from the specified file.

src/main/java/org/jboss/netty/handler/stream/ChunkedNioFile.java

@@ -39,7 +39,7 @@ public class ChunkedNioFile implements ChunkedInput {
     private long startOffset;
     private final long endOffset;
     private final int chunkSize;
-    private volatile long offset;
+    private long offset;
 
     /**
      * Creates a new instance that fetches data from the specified file.

src/main/java/org/jboss/netty/handler/stream/ChunkedNioStream.java

@@ -32,7 +32,7 @@ public class ChunkedNioStream implements ChunkedInput {
     private final ReadableByteChannel in;
 
     private final int chunkSize;
-    private volatile long offset;
+    private long offset;
 
     /**
      * Associated ByteBuffer

src/main/java/org/jboss/netty/handler/stream/ChunkedStream.java

@@ -36,7 +36,7 @@ public class ChunkedStream implements ChunkedInput {
 
     private final PushbackInputStream in;
     private final int chunkSize;
-    private volatile long offset;
+    private long offset;
 
     /**
      * Creates a new instance that fetches data from the specified stream.