Language protocol: fixed documentSymbol queries

src/project.cc

@@ -741,7 +741,7 @@ void Project::LanguageProtocol::show_symbols() {
   else {
     std::vector<std::string> rows;
     std::promise<void> result_processed;
-    client->write_request(nullptr, "textDocument/documentSymbol", R"("textDocument":{"uri":"file://)" + language_protocol_view->file_path.string() + "\"}", [&result_processed, &rows, locations](const boost::property_tree::ptree &result, bool error) {
+    client->write_request(language_protocol_view, "textDocument/documentSymbol", R"("textDocument":{"uri":"file://)" + language_protocol_view->file_path.string() + "\"}", [&result_processed, &rows, locations](const boost::property_tree::ptree &result, bool error) {
       if(!error) {
         for(auto it = result.begin(); it != result.end(); ++it) {
           try {

src/source_language_protocol.cc

@@ -860,7 +860,7 @@ void Source::LanguageProtocolView::setup_navigation_and_refactoring() {
       std::vector<std::pair<Offset, std::string>> methods;
 
       std::promise<void> result_processed;
-      client->write_request(nullptr, "textDocument/documentSymbol", R"("textDocument":{"uri":"file://)" + file_path.string() + "\"}", [&result_processed, &methods](const boost::property_tree::ptree &result, bool error) {
+      client->write_request(this, "textDocument/documentSymbol", R"("textDocument":{"uri":"file://)" + file_path.string() + "\"}", [&result_processed, &methods](const boost::property_tree::ptree &result, bool error) {
         if(!error) {
           for(auto it = result.begin(); it != result.end(); ++it) {
             try {