Fix issue: No visible text when cursor is moved to the end of buffer

This pull request fixes an issue where using `(evil-goto-line nil)` to
move the cursor to the end of the buffer would result in no visible
text.

This patch draws inspiration from the built-in `(end-of-buffer)`
function, which does not exhibit the same issue as calling
`(evil-goto-line nil)`.

evil-commands.el

@@ -254,7 +254,14 @@ of the current screen line."
   :type line
   (evil-ensure-column
     (if (null count)
-        (goto-char (point-max))
+        (progn
+          (goto-char (point-max))
+          (when (and (eq (current-buffer) (window-buffer))
+                     (> (point) (window-end nil t)))
+            ;; If the end of the buffer is not already on the screen, scroll in
+            ;; a special way to position it near the bottom.
+            (overlay-recenter (point))
+            (recenter -1)))
       (goto-char (point-min))
       (forward-line (1- count)))))