Merge pull request opencv#8796 from liurs1990:master

vpisarev · vpisarev · commit d962b3f499ce · 2017-05-26T12:04:56.000Z
diff --git a/modules/features2d/src/mser.cpp b/modules/features2d/src/mser.cpp
@@ -335,6 +335,8 @@ class MSER_Impl : public MSER
             head = comp1->head;
             tail = comp2->tail;
             size = comp1->size + comp2->size;
+            // update the history size
+            history->size =size;
 
             CompHistory *h1 = history->child_;
             CompHistory *h2 = comp2->history;
