Avoid errors in flymake in builds --without-x

* lisp/progmodes/flymake.el: Require 'mwheel'.  (Bug#28732)

diff --git a/lisp/progmodes/flymake.el b/lisp/progmodes/flymake.el
index 58bad8f366e3ce1c21c82a95214f391dd226ad11..40eacdd1888205fd3ce22ec13a55c95cf81445b5 100644 (file)
--- a/lisp/progmodes/flymake.el
+++ b/lisp/progmodes/flymake.el
@@ -48,6 +48,10 @@
 (require 'thingatpt) ; end-of-thing
 (require 'warnings) ; warning-numeric-level, display-warning
 (require 'compile) ; for some faces
+;; We need the next require to avoid compiler warnings and run-time
+;; errors about mouse-wheel-up/down-event in builds --without-x, where
+;; mwheel is not preloaded.
+(require 'mwheel)
 ;; when-let*, if-let*, hash-table-keys, hash-table-values:
 (eval-when-compile (require 'subr-x))