web_browser: Add bounds checking to applet interface

src/core/hle/service/hid/controllers/npad.cpp

@@ -638,10 +638,8 @@ void Controller_NPad::ClearAllControllers() {
                   });
 }
 
-u32 Controller_NPad::GetPressState() {
-    const auto res = press_state;
-    press_state = 0;
-    return res;
+u32 Controller_NPad::GetAndResetPressState() {
+    return std::exchange(press_state, 0);
 }
 
 bool Controller_NPad::IsControllerSupported(NPadControllerType controller) const {

src/core/hle/service/hid/controllers/npad.h

@@ -126,7 +126,7 @@ public:
 
     // Logical OR for all buttons presses on all controllers
     // Specifically for cheat engine and other features.
-    u32 GetPressState();
+    u32 GetAndResetPressState();
 
     static std::size_t NPadIdToIndex(u32 npad_id);
     static u32 IndexToNPad(std::size_t index);