UploadPack: Always make PackWriter.Statistics available

If the packer fails, still obtain the stats and make them available
to the logger and the caller. Failures can frequently happen when
a client disconnects in the middle of a pack stream. Server admins
may still want to examine the timing metrics from counting and
compressing phases.

Change-Id: Iceae4f68b5473f4223d85c9edfb57837fc818eed

org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java

@@ -1413,7 +1413,6 @@ public class UploadPack {
 			}
 
 			pw.writePack(pm, NullProgressMonitor.INSTANCE, packOut);
-			statistics = pw.getStatistics();
 
 			if (msgOut != NullOutputStream.INSTANCE) {
 				String msg = pw.getStatistics().getMessage() + '\n';
@@ -1422,13 +1421,13 @@ public class UploadPack {
 			}
 
 		} finally {
+			statistics = pw.getStatistics();
+			if (statistics != null)
+				logger.onPackStatistics(statistics);
 			pw.release();
 		}
 
 		if (sideband)
 			pckOut.end();
-
-		if (statistics != null)
-			logger.onPackStatistics(statistics);
 	}
 }