patch 7.4.1866
Problem:    Invalid memory access when exiting with EXITFREE defined.
            (Dominique Pelle)
Solution:   Set "really_exiting" and skip error messages.
diff --git a/src/version.c b/src/version.c
index 7952a14..f9305d5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1866,
+/**/
     1865,
 /**/
     1864,