patch 8.0.0752: build fails on MS-Windows

Problem:    Build fails on MS-Windows.
Solution:   Change #ifdef for set_color_count().
diff --git a/src/version.c b/src/version.c
index 174fc0d..9ea3d81 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    752,
+/**/
     751,
 /**/
     750,