Fix bug reference.

2eb91537 · Robbert Krebbers · cf4effe5 · 2eb91537
Commit 2eb91537 authored Jan 12, 2018 by Robbert Krebbers
--- a/theories/proofmode/tactics.v
+++ b/theories/proofmode/tactics.v
@@ -390,7 +390,7 @@ resolved at arbitrary moments. It seems that tactics like `apply`, `split` and
 triggered too eagerly, this tactic uses `refine` at various places instead of
 `apply`.

-TODO: Investigate what really is going on. Is there a related to Cog bug #5752?
+TODO: Investigate what really is going on. Is there a related to Cog bug #4969?
 When should holes in an `open_constr` be resolved?
 *)
 Local Tactic Notation "iSpecializeArgs" constr(H) open_constr(xs) :=