Qt: Remove unused variable

src/core/controller.cpp

@@ -215,8 +215,9 @@ bool Controller::PortAndSlotIsMultitap(u32 port, u32 slot)
 
 const char* Controller::GetPortDisplayName(u32 port, u32 slot, bool mtap)
 {
-  static constexpr const char* no_mtap_labels[] = {"1", "2"};
-  static constexpr const char* mtap_labels[][4] = {{"1A", "1B", "1C", "1D"}, {"2A", "2B", "2C", "2D"}};
+  static constexpr const std::array<const char*, NUM_MULTITAPS> no_mtap_labels = {{"1", "2"}};
+  static constexpr const std::array<std::array<const char*, NUM_CONTROLLER_AND_CARD_PORTS_PER_MULTITAP>, NUM_MULTITAPS>
+    mtap_labels = {{{{"1A", "1B", "1C", "1D"}}, {{"2A", "2B", "2C", "2D"}}}};
 
   DebugAssert(port < 2 && slot < 4);
   return mtap ? mtap_labels[port][slot] : no_mtap_labels[port];

src/core/controller.h

@@ -7,6 +7,7 @@
 #include "settings.h"
 #include "types.h"
 
+#include <array>
 #include <memory>
 #include <optional>
 #include <span>

src/core/system.cpp

@@ -3904,14 +3904,14 @@ void System::UpdateMultitaps()
     case MultitapMode::Disabled:
     {
       Pad::GetMultitap(0)->SetEnable(false, 0);
-      Pad::GetMultitap(1)->SetEnable(false, 0);
+      Pad::GetMultitap(1)->SetEnable(false, 1);
     }
     break;
 
     case MultitapMode::Port1Only:
     {
       Pad::GetMultitap(0)->SetEnable(true, 0);
-      Pad::GetMultitap(1)->SetEnable(false, 0);
+      Pad::GetMultitap(1)->SetEnable(false, 1);
     }
     break;
 
@@ -3925,7 +3925,7 @@ void System::UpdateMultitaps()
     case MultitapMode::BothPorts:
     {
       Pad::GetMultitap(0)->SetEnable(true, 0);
-      Pad::GetMultitap(1)->SetEnable(true, 4);
+      Pad::GetMultitap(1)->SetEnable(true, 1);
     }
     break;
 

src/core/types.h

@@ -234,7 +234,8 @@ enum class MultitapMode
 enum : u32
 {
   NUM_CONTROLLER_AND_CARD_PORTS = 8,
-  NUM_MULTITAPS = 2
+  NUM_MULTITAPS = 2,
+  NUM_CONTROLLER_AND_CARD_PORTS_PER_MULTITAP = NUM_CONTROLLER_AND_CARD_PORTS / NUM_MULTITAPS,
 };
 
 enum class CPUFastmemMode : u8

src/duckstation-qt/controllersettingswindow.cpp

@@ -21,8 +21,6 @@
 #include <QtWidgets/QTextEdit>
 #include <array>
 
-static constexpr const std::array<char, 4> s_mtap_slot_names = {{'A', 'B', 'C', 'D'}};
-
 ControllerSettingsWindow::ControllerSettingsWindow(SettingsInterface* game_sif /* = nullptr */,
                                                    QWidget* parent /* = nullptr */)
   : QWidget(parent), m_editing_settings_interface(game_sif)