CommonHostInterface: Clear input map before changing interface

Should hopefully fix the crash when changing controller backends.

src/frontend-common/common_host_interface.cpp

@@ -461,6 +461,7 @@ void CommonHostInterface::UpdateControllerInterface()
 
   if (m_controller_interface)
   {
+    ClearInputMap();
     m_controller_interface->Shutdown();
     m_controller_interface.reset();
   }
@@ -938,14 +939,19 @@ bool CommonHostInterface::HandleHostMouseEvent(HostMouseButton button, bool pres
 }
 
 void CommonHostInterface::UpdateInputMap(SettingsInterface& si)
+{
+  ClearInputMap();
+  UpdateControllerInputMap(si);
+  UpdateHotkeyInputMap(si);
+}
+
+void CommonHostInterface::ClearInputMap()
 {
   m_keyboard_input_handlers.clear();
   m_mouse_input_handlers.clear();
+  m_controller_vibration_motors.clear();
   if (m_controller_interface)
     m_controller_interface->ClearBindings();
-
-  UpdateControllerInputMap(si);
-  UpdateHotkeyInputMap(si);
 }
 
 void CommonHostInterface::AddControllerRumble(u32 controller_index, u32 num_motors, ControllerRumbleCallback callback)

src/frontend-common/common_host_interface.h

@@ -217,6 +217,7 @@ protected:
   bool HandleHostKeyEvent(HostKeyCode code, bool pressed);
   bool HandleHostMouseEvent(HostMouseButton button, bool pressed);
   void UpdateInputMap(SettingsInterface& si);
+  void ClearInputMap();
 
   void AddControllerRumble(u32 controller_index, u32 num_motors, ControllerRumbleCallback callback);
   void UpdateControllerRumble();