dfs: Read at the aligned position

The position is anyway aligned in BlockBasedFile, so this is no-op.

Change-Id: Iba037e0ecff339393dd2c03fc5ae4fe858031e4f
Signed-off-by: Masaya Suzuki <masayasuzuki@google.com>

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsBlockCache.java

@@ -412,8 +412,7 @@ public final class DfsBlockCache {
 			getStat(statMiss, key).incrementAndGet();
 			boolean credit = true;
 			try {
-				v = file.readOneBlock(requestedPosition, ctx,
-						fileChannel.get());
+				v = file.readOneBlock(position, ctx, fileChannel.get());
 				credit = false;
 			} finally {
 				if (credit) {