More robust test output

jonludlam · jonludlam · commit 1f016add8d15 · 2021-12-15T14:24:43.000Z
diff --git a/test/xref2/aliaschain.t/run.t b/test/xref2/aliaschain.t/run.t
@@ -4,5 +4,5 @@ size.
   $ ocamlc -c -bin-annot chain.mli
   $ odoc compile chain.cmti
   $ odoc link chain.odoc -I .
-  $ du -h chain.odocl
-   24K	chain.odocl
+  $ du -h chain.odocl | awk '{print $1}'
+  24K
