patch 8.0.1746: MS-Windows: channel tests fail

Problem:    MS-Windows: channel tests fail.
Solution:   Make a copy of the command before splitting it.
diff --git a/src/version.c b/src/version.c
index 1535322..af43697 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1746,
+/**/
     1745,
 /**/
     1744,