Send solr request only once [#19] (#20)

The solr request to the backend is sent 2 times. This fixes it and
only 1 is sent.

By the way, this triggered a bug in asyncconnect. There was a race
condition and sometimes the results will be ignored completely, that is
both of the two updates were ignored.

It's beyond the scope to fix asyncconnect, but sending only 1 request
instead of the double should fix this.

Co-authored-by: Balázs Reé <ree@greenfinity.hu>

news/19.bugfix

@@ -0,0 +1 @@
+Send solr request only once [#25] @reebalazs

src/components/theme/SolrSearch/SolrSearch.jsx

@@ -239,15 +239,16 @@ class SolrSearch extends Component {
   };
 
   updateSearch = () => {
-    this.doSearch(this.searchParams());
     this.props.history.replace({
       search: qs.stringify(queryStateToParams(this.state)),
     });
   };
 
   handleQueryPaginationChange = (e, { activePage }) => {
     window.scrollTo(0, 0);
-    this.setState({ currentPage: activePage }, () => this.updateSearch());
+    this.setState({ currentPage: activePage }, () =>
+      this.doSearch(this.searchParams()),
+    );
   };
 
   onSortChange = (selectedOption, selectedSortOrder) => {