Revert "PackBitmapIndex: Not buffer inflated bitmap in BasePackBitmapIndex"

This reverts commit 3aee92478c2cbc67cd921533437b824e43ed9798, which
increased fetch latency significantly.

Change-Id: Id31a94dff83bf7ab2121718ead819bd08306a0b6
Signed-off-by: Yunjie Li <yunjieli@google.com>
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/BasePackBitmapIndex.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/BasePackBitmapIndex.java
index 74b46bc..c9bb167 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/BasePackBitmapIndex.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/BasePackBitmapIndex.java
@@ -72,6 +72,7 @@
 				if (r instanceof EWAHCompressedBitmap) {
 					out = out.xor((EWAHCompressedBitmap) r);
 					out.trim();
+					bitmapContainer = out;
 					return out;
 				}
 				xb = (XorCompressedBitmap) r;