patch 8.2.1620: searchcount() test fails

Problem:    searchcount() test fails.
Solution:   Restore default flag value.
diff --git a/src/search.c b/src/search.c
index c1da58b..28e0adc 100644
--- a/src/search.c
+++ b/src/search.c
@@ -4062,7 +4062,7 @@
     char_u		*pattern = NULL;
     int			maxcount = SEARCH_STAT_DEF_MAX_COUNT;
     long		timeout = SEARCH_STAT_DEF_TIMEOUT;
-    int			recompute = FALSE;
+    int			recompute = TRUE;
     searchstat_T	stat;
 
     if (rettv_dict_alloc(rettv) == FAIL)