Pass a DfsRepositoryDescription to InMemoryRepository

This was likely intended originally, but this class had never been
used, so the mistake went unnoticed.

Change-Id: I5e0e9f22ebf707c11d0581511c7a56b182188f77

org.eclipse.jgit/src/org/eclipse/jgit/storage/dfs/InMemoryRepository.java

@@ -36,13 +36,13 @@ public class InMemoryRepository extends DfsRepository {
 	 * @param repoDesc
 	 *             description of the repository.
 	 */
-	public InMemoryRepository(DfsRepository repoDesc) {
+	public InMemoryRepository(DfsRepositoryDescription repoDesc) {
 		super(new DfsRepositoryBuilder<DfsRepositoryBuilder, InMemoryRepository>() {
 			@Override
 			public InMemoryRepository build() throws IOException {
 				throw new UnsupportedOperationException();
 			}
-		});
+		}.setRepositoryDescription(repoDesc));
 
 		objdb = new MemObjDatabase(this);
 		refdb = new MemRefDatabase();