Assign ctags symbols browser to Alt-Q instead of ctrl-k

The key is already bound to push-line, however the zle widget
has also two other keys, ctrl-q and Alt-q, so no problem, as
IMO users who want that widget already use Alt-q, not Alt-Q.

zi-browse-symbol

@@ -381,8 +381,10 @@ if [[ $__tfind_spe_call_count -eq 1 ]]; then
     zle -A $pup_widget saved-$pup_widget
     zle -N $pdown_widget _tfind_simulate_widget
     zle -N $pup_widget _tfind_simulate_widget
-    zle -A zle-line-pre-redraw saved-pre-redraw
-    zle -D zle-line-pre-redraw
+    if (( $+widgets[zle-line-pre-redraw] )); then
+        zle -A zle-line-pre-redraw saved-pre-redraw
+        zle -D zle-line-pre-redraw
+    fi
     local selected_editor cd_at_edit tagtext tagline taglinebyte tagfile
     local -a comm
     comm=()
@@ -457,8 +459,11 @@ if [[ $__tfind_spe_call_count -eq 1 ]]; then
     zle -A saved-$pup_widget $pup_widget
     zle -D saved-$pdown_widget saved-$pup_widget
 
-    zle -A saved-pre-redraw zle-line-pre-redraw
-    zle -D saved-pre-redraw
+    if (( $+widgets[saved-pre-redraw] )); then
+        zle -A saved-pre-redraw zle-line-pre-redraw
+        zle -D saved-pre-redraw
+    fi
+
     # Full reinitialisation at next call
     __tfind_spe_call_count=0
 

zinit.zsh

@@ -3265,6 +3265,7 @@ zle -N zi-browse-symbol
 zle -N zi-browse-symbol-backwards zi-browse-symbol
 zle -N zi-browse-symbol-pbackwards zi-browse-symbol
 zle -N zi-browse-symbol-pforwards zi-browse-symbol
-bindkey "^K" zi-browse-symbol
+zstyle -s ':zinit:browse-symbol' key ZINIT_TMP || ZINIT_TMP='\eQ'
+[[ -n $ZINIT_TMP ]] && bindkey $ZINIT_TMP zi-browse-symbol
 
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