patch 7.4.2301
Problem:    MS-Windows: some files remain after testing.
Solution:   Close the channel output file.  Wait for the file handle to be
            closed before deleting the file.
diff --git a/src/version.c b/src/version.c
index 7bf6d7c..fbe8d57 100644
--- a/src/version.c
+++ b/src/version.c
@@ -764,6 +764,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2301,
+/**/
     2300,
 /**/
     2299,