[smuxi] lib/SmartIrc4net: update to include bugfix that effects Smuxi

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit 1d46a4b90405efd2dc9b617f1275810532cc47f7
Author: Mirco Bauer <meebey meebey net>
Date:   Fri Feb 12 22:40:33 2021 +0800

    lib/SmartIrc4net: update to include bugfix that effects Smuxi
    
    Contains cherry-picked fix e420c0a507460ce58bbb40eb5fa386777529e7a3:
    fix potential NRE in IrcClient._Event_RPL_BOUNCE()

 lib/SmartIrc4net | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/lib/SmartIrc4net b/lib/SmartIrc4net
index 63b8c9ca..b2a5fb97 160000
--- a/lib/SmartIrc4net
+++ b/lib/SmartIrc4net
@@ -1 +1 @@
-Subproject commit 63b8c9caef8d3408afb8c2b019ca1e8253a811a5
+Subproject commit b2a5fb97d74342cf966a110aff7fcacea1fddebb