Remove u32

It's better to use types from the standard library.

source/scriptinterface/JSON.cpp

@@ -21,7 +21,6 @@
 
 #include "lib/file/vfs/vfs_path.h"
 #include "lib/status.h"
-#include "lib/types.h"
 #include "lib/utf8.h"
 #include "ps/CLogger.h"
 #include "ps/CStr.h"
@@ -42,7 +41,7 @@ bool Script::ParseJSON(const Script::Request& rq, const std::string& string_utf8
 {
 	std::wstring attrsW = wstring_from_utf8(string_utf8);
 	std::u16string string(attrsW.begin(), attrsW.end());
-	if (JS_ParseJSON(rq.cx, string.c_str(), (u32)string.size(), out))
+	if (JS_ParseJSON(rq.cx, string.c_str(), static_cast<std::uint32_t>(string.size()), out))
 		return true;
 
 	Script::Exception::CatchPending(rq);
@@ -77,7 +76,7 @@ namespace
 {
 struct Stringifier
 {
-	static bool callback(const char16_t* buf, u32 len, void* data)
+	static bool callback(const char16_t* buf, std::uint32_t len, void* data)
 	{
 		std::u16string str(buf, buf+len);
 		std::wstring strw(str.begin(), str.end());