Fix warnings in new rust version

Author: Rodrigodd

libretro/src/lib.rs

@@ -98,6 +98,7 @@ fn core() -> &'static Core {
     // to this function. CORE is never mutate after being initialized, so subsequent calls to this
     // function will not invalidate previous returned references.
     unsafe {
+        #[allow(static_mut_refs)]
         let core = CORE.get_or_insert_with(Core::default);
 
         // assert this is single-threaded

src/config.rs

@@ -127,7 +127,7 @@ where
 {
     use serde::de;
     struct ScreenSizeVisitor;
-    impl<'de> de::Visitor<'de> for ScreenSizeVisitor {
+    impl de::Visitor<'_> for ScreenSizeVisitor {
         type Value = Option<(u32, u32)>;
 
         fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>

src/lib.rs

@@ -1,5 +1,7 @@
 // To minimize changes between platforms, we still use Arc-Mutex on Wasm.
 #![allow(clippy::arc_with_non_send_sync)]
+// My deserializer macro triggers this warning, need to fix it in the dependency later.
+#![allow(non_local_definitions)]
 
 #[cfg(target_arch = "wasm32")]
 pub static RESIZE: parking_lot::Mutex<Option<(u32, u32)>> = parking_lot::const_mutex(None);

src/style.rs

@@ -75,7 +75,7 @@ mod loaded_files {
 
     use super::config;
 
-    impl<'a> StyleLoaderCallback for super::Loader<'a> {
+    impl StyleLoaderCallback for super::Loader<'_> {
         fn load_texture(&mut self, mut name: String) -> (u32, u32, u32) {
             if name == "icons.png" {
                 name = format!("icons{}x.png", self.scale_factor.to_float()).to_string();
@@ -185,7 +185,7 @@ mod static_files {
             include_bytes!("../assets/icons4x.png"),
         ],
     };
-    impl<'a> StyleLoaderCallback for super::Loader<'a> {
+    impl StyleLoaderCallback for super::Loader<'_> {
         fn load_texture(&mut self, name: String) -> (u32, u32, u32) {
             if let Some(texture) = self.textures.get(&name) {
                 return *texture;

src/ui.rs

@@ -24,7 +24,7 @@ mod rom_loading_ui;
 pub use rom_loading_ui::{create_rom_loading_ui, RomEntries};
 
 struct Render<'a>(&'a mut dyn SpriteRender);
-impl<'a> GuiRenderer for Render<'a> {
+impl GuiRenderer for Render<'_> {
     fn update_font_texture(&mut self, font_texture: u32, rect: [u32; 4], data_tex: &[u8]) {
         let mut data = Vec::with_capacity(data_tex.len() * 4);
         for byte in data_tex.iter() {