Fix obsolete usage of lexical-let

See their respective doc-strings for further information.

init.el

@@ -405,7 +405,10 @@
       track-eol t
       gc-cons-threshold (* 100 1024 1024)   ; 100mb
       read-process-output-max (* 1024 1024) ; 1mb
-      next-error-message-highlight t)
+      next-error-message-highlight t
+      help-enable-symbol-autoload t
+      describe-bindings-outline t
+      redisplay-skip-fontification-on-input t)
 
 (when (memq system-type '(gnu gnu/linux gnu/kfreebsd))
   (setq x-wait-for-event-timeout nil))
@@ -1971,6 +1974,9 @@ respectively."
   :commands (moody-replace-mode-line-buffer-identification
              moody-replace-vc-mode))
 
+(use-package smiley
+  :init (setq smiley-style 'emoji))
+
 
 ;; * Dired
 
@@ -2055,10 +2061,10 @@ respectively."
               "Compare marked files in dired with ediff."
               ;; from: https://oremacs.com/2017/03/18/dired-ediff/
               (interactive)
-              (lexical-let ((files (dired-get-marked-files))
+              (let ((files (dired-get-marked-files))
                     (wnd (current-window-configuration)))
                 (if (<= (length files) 2)
-                    (lexical-let ((file1 (car files))
+                    (let ((file1 (car files))
                           (file2 (if (cdr files)
                                      (cadr files)
                                    (read-file-name