patch 8.2.4905: codecov includes MS-Windows install header file

Problem:    codecov includes MS-Windows install header file.
Solution:   Ignore dosinst.h.
diff --git a/src/version.c b/src/version.c
index d39abf9..af4c0b2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4905,
+/**/
     4904,
 /**/
     4903,