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.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2301,
 /**/
     2300,
 /**/