patch 7.4.1800
Problem:    Unnecessary #ifdef.
Solution:   Just use USE_24BIT. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index 5a09447..e49c125 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1800,
+/**/
     1799,
 /**/
     1798,