patch 9.0.0622: matchaddpos() can get slow when adding many matches
Problem: matchaddpos() can get slow when adding many matches.
Solution: Update the next available match ID when manually picking an ID and
remove check if the available ID can be used. (idea by Rick Howe)
diff --git a/src/version.c b/src/version.c
index eedf110..95042e8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
+ 622,
+/**/
621,
/**/
620,