use WP sugar

theories/program_logic/weakestpre.v

@@ -242,7 +242,7 @@ Lemma wp_wand_r s E e Φ Ψ :
   WP e @ s; E {{ Φ }} ∗ (∀ v, Φ v -∗ Ψ v) ⊢ WP e @ s; E {{ Ψ }}.
 Proof. iIntros "[Hwp H]". iApply (wp_wand with "Hwp H"). Qed.
 Lemma wp_frame_wand_l s E e Q Φ :
-  Q ∗ WP e @ s; E {{ λ v, Q -∗ Φ v }} -∗ WP e @ s; E {{ Φ }}.
+  Q ∗ WP e @ s; E {{ v, Q -∗ Φ v }} -∗ WP e @ s; E {{ Φ }}.
 Proof.
   iIntros "[HQ HWP]". iApply (wp_wand with "HWP").
   iIntros (v) "HΦ". by iApply "HΦ".