glog: Disable --quit-if-one-screen in $LESS

Make glog always open the output of `git show` in a **real** pager by
disabling `--quit-if-one-screen`.

.config/zsh/autoload/git/glog

@@ -119,5 +119,5 @@ fi
 # Display an ascii graph of the commits in the above format and pipe that into
 # fzf.
 git log "$formatshort" --graph "$dateshort" --color=always "$@" \
-| fzf "${fzf_args[@]}"
+| env LESS="$LESS${LESS:+ }-+F" fzf "${fzf_args[@]}"
 return 0