Apply all the clang-tidy modernize-* fixes

src/xmpp/adhoc_command.cpp

@@ -1,11 +1,12 @@
+#include <utility>
 #include <xmpp/adhoc_command.hpp>
 #include <xmpp/xmpp_component.hpp>
 #include <utils/reload.hpp>
 
 using namespace std::string_literals;
 
-AdhocCommand::AdhocCommand(std::vector<AdhocStep>&& callbacks, const std::string& name, const bool admin_only):
-  name(name),
+AdhocCommand::AdhocCommand(std::vector<AdhocStep>&& callbacks, std::string name, const bool admin_only):
+  name(std::move(name)),
   callbacks(std::move(callbacks)),
   admin_only(admin_only)
 {

src/xmpp/adhoc_command.hpp

@@ -17,7 +17,7 @@ class AdhocCommand
 {
   friend class AdhocSession;
 public:
-  AdhocCommand(std::vector<AdhocStep>&& callbacks, const std::string& name, const bool admin_only);
+  AdhocCommand(std::vector<AdhocStep>&& callbacks, std::string name, const bool admin_only);
   ~AdhocCommand() = default;
   AdhocCommand(const AdhocCommand&) = default;
   AdhocCommand(AdhocCommand&&) = default;

src/xmpp/biboumi_component.cpp

@@ -83,10 +83,8 @@ BiboumiComponent::BiboumiComponent(std::shared_ptr<Poller>& poller, const std::s
 
 void BiboumiComponent::shutdown()
 {
-  for (auto it = this->bridges.begin(); it != this->bridges.end(); ++it)
-  {
-    it->second->shutdown("Gateway shutdown");
-  }
+  for (auto& pair: this->bridges)
+    pair.second->shutdown("Gateway shutdown");
 }
 
 void BiboumiComponent::clean()
@@ -696,8 +694,8 @@ Bridge* BiboumiComponent::find_user_bridge(const std::string& full_jid)
 std::vector<Bridge*> BiboumiComponent::get_bridges() const
 {
   std::vector<Bridge*> res;
-  for (auto it = this->bridges.begin(); it != this->bridges.end(); ++it)
-    res.push_back(it->second.get());
+  for (const auto& bridge: this->bridges)
+    res.push_back(bridge.second.get());
   return res;
 }
 

src/xmpp/jid.cpp

@@ -53,7 +53,7 @@ std::string jidprep(const std::string& original)
 
   char local[max_jid_part_len] = {};
   memcpy(local, jid.local.data(), std::min(max_jid_part_len, jid.local.size()));
-  Stringprep_rc rc = static_cast<Stringprep_rc>(::stringprep(local, max_jid_part_len,
+  auto rc = static_cast<Stringprep_rc>(::stringprep(local, max_jid_part_len,
                      static_cast<Stringprep_profile_flags>(0), stringprep_xmpp_nodeprep));
   if (rc != STRINGPREP_OK)
   {

src/xmpp/xmpp_stanza.cpp

@@ -7,7 +7,7 @@
 #include <iostream>
 #include <sstream>
 
-#include <string.h>
+#include <cstring>
 
 std::string xml_escape(const std::string& data)
 {