patch 8.2.0840: search match count wrong when only match is in fold

Problem:    Search match count wrong when only match is in fold.
Solution:   Update search stats when in a closed fold. (Christian Brabandt,
            closes #6160, closes #6152)
diff --git a/src/testdir/dumps/Test_searchstat_3.dump b/src/testdir/dumps/Test_searchstat_3.dump
new file mode 100644
index 0000000..a21b47e
--- /dev/null
+++ b/src/testdir/dumps/Test_searchstat_3.dump
@@ -0,0 +1,10 @@
+|i+0&#ffffff0|f| @72
+>++0#0000e05#a8a8a8255|-@1| @1|2| |l|i|n|e|s|:| |f|o@1|-@57
+|e+0#0000000#ffffff0|n|d|i|f| @69
+@75
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|/+0#0000000&|f|o@1| @35|[|1|/|2|]| @11|2|,|2|-|1| @8|A|l@1|