patch 8.2.4607: sourcing buffer lines may lead to errors for conflicts

Problem:    Sourcing buffer lines may lead to errors for conflicts.
Solution:   Add the ++clear argument. (Yegappan Lakshmanan, closes #9991)
diff --git a/src/version.c b/src/version.c
index 6d5e1a6..2c2ac28 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4607,
+/**/
     4606,
 /**/
     4605,