Prefix all size_t with std::

done automatically by executing regex replace `([^:0-9a-zA-Z_])size_t([^0-9a-zA-Z_])` -> `$1std::size_t$2`

src/core/hle/service/cfg/cfg.cpp

@@ -477,7 +477,7 @@ ResultCode Module::FormatConfig() {
 
     u16_le country_name_buffer[16][0x40] = {};
     std::u16string region_name = Common::UTF8ToUTF16("Gensokyo");
-    for (size_t i = 0; i < 16; ++i) {
+    for (std::size_t i = 0; i < 16; ++i) {
         std::copy(region_name.cbegin(), region_name.cend(), country_name_buffer[i]);
     }
     // 0x000B0001 - Localized names for the profile Country
@@ -627,7 +627,7 @@ std::u16string Module::GetUsername() {
     // the username string in the block isn't null-terminated,
     // so we need to find the end manually.
     std::u16string username(block.username, ARRAY_SIZE(block.username));
-    const size_t pos = username.find(u'\0');
+    const std::size_t pos = username.find(u'\0');
     if (pos != std::u16string::npos)
         username.erase(pos);
     return username;