patch 8.2.2844: Vim9: memory leak when using searchpair()

Problem:    Vim9: memory leak when using searchpair().
Solution:   Free the v_instr field.
diff --git a/src/version.c b/src/version.c
index 01c7792..68f05af 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2844,
+/**/
     2843,
 /**/
     2842,