[nongnu] elpa/keycast 809ce7625a: Silence older byte-compilers

[ELPA Syncer]

branch: elpa/keycast
commit 809ce7625a8c8c7ae1ca4e4a38aa857f83c4e732
Author: Jonas Bernoulli <jonas@bernoul.li>
Commit: Jonas Bernoulli <jonas@bernoul.li>

    Silence older byte-compilers
---
 keycast.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/keycast.el b/keycast.el
index ae1a3fffee..bb7953b8fb 100644
--- a/keycast.el
+++ b/keycast.el
@@ -435,7 +435,9 @@ t to show the actual COMMAND, or a symbol to be shown 
instead."
 ;;; Tab-Bar
 
 (eval-when-compile
-  (defvar tab-bar-format))
+  (defvar tab-bar-format)
+  (defvar tab-bar-mode))
+(declare-function tab-bar-mode "tab-bar" (&optional arg))
 
 (defvar keycast--temporary-tab-bar nil)
 (defvar keycast--previous-tab-bar-format nil)