patch 8.2.4904: codecov includes MS-Windows install files

Problem:    codecov includes MS-Windows install files.
Solution:   Ignore dosinst.c and uninstall.c.
diff --git a/src/version.c b/src/version.c
index 9ec5e31..d39abf9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4904,
+/**/
     4903,
 /**/
     4902,