Convert Encoder callbacks to be boolean functions (#12805)

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/keyboards/monarch/keymaps/iso/keymap.c b/keyboards/monarch/keymaps/iso/keymap.c
index 71f02675e..2a6ea3a34 100644
--- a/keyboards/monarch/keymaps/iso/keymap.c
+++ b/keyboards/monarch/keymaps/iso/keymap.c
@@ -34,10 +34,11 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
   )
 };
 
-void encoder_update_user(uint8_t index, bool clockwise) {
+bool encoder_update_user(uint8_t index, bool clockwise) {
     if (clockwise) {
         tap_code(KC_VOLU);
     } else {
         tap_code(KC_VOLD);
     }
+    return true;
 }