Move (if|when)-let* shims to core.el

Fix void-functon when-let* errors at startup for Emacs 25.* users.

core/core-lib.el

@@ -1,16 +1,7 @@
 ;;; core-lib.el -*- lexical-binding: t; -*-
 
-(eval-and-compile
-  (unless EMACS26+
-    (with-no-warnings
-      ;; if-let and when-let were moved to (if|when)-let* in Emacs 26+ so we
-      ;; alias them for 25 users.
-      (defalias 'if-let* #'if-let)
-      (defalias 'when-let* #'when-let))))
-
-
 ;;
-;; Helpers
+;;; Helpers
 
 (defun doom--resolve-path-forms (spec &optional directory)
   "Converts a simple nested series of or/and forms into a series of
@@ -78,7 +69,7 @@ This is used by `associate!', `file-exists-p!' and `project-file-exists-p!'."
 
 
 ;;
-;; Public library
+;;; Public library
 
 (defun doom-unquote (exp)
   "Return EXP unquoted."

core/core.el

@@ -460,7 +460,13 @@ to least)."
 
 (eval-and-compile
   (require 'subr-x)
-  (require 'cl-lib))
+  (require 'cl-lib)
+  (unless EMACS26+
+    (with-no-warnings
+      ;; if-let and when-let were moved to (if|when)-let* in Emacs 26+ so we
+      ;; alias them for 25 users.
+      (defalias 'if-let* #'if-let)
+      (defalias 'when-let* #'when-let))))
 
 (add-to-list 'load-path doom-core-dir)