Bump Iris.

opam

@@ -9,6 +9,6 @@ build: [make "-j%{jobs}%"]
 install: [make "install"]
 remove: ["rm" "-rf" "%{lib}%/coq/user-contrib/iris_examples"]
 depends: [
-  "coq-iris" { (= "dev.2019-01-25.3.6a8c782b") | (= "dev") }
+  "coq-iris" { (= "dev.2019-01-27.0.9896799d") | (= "dev") }
   "coq-autosubst" { = "dev.coq86" }
 ]

theories/hocap/shared_bag.v

@@ -55,7 +55,7 @@ Section proof.
       iMod (bag_contents_update b ({[v]} ∪ Y) with "[$Hb1 $Hb2]") as "[Hb1 Hb2]".
       iFrame. iApply "Hcl".
       iNext. iExists _; iFrame.
-      rewrite big_sepMS_union big_sepMS_singleton. iFrame. }
+      rewrite big_sepMS_singleton. iFrame. }
     { iNext. iIntros "_". iApply "HΦ". by iFrame "Hinv". }
   Qed.