Fix warnings

src/header/stdio/mod.rs

@@ -1238,7 +1238,7 @@ pub unsafe extern "C" fn vsscanf(s: *const c_char, format: *const c_char, ap: va
 pub unsafe fn flush_io_streams() {
     let flush = |stream: *mut FILE| {
         let stream = &mut *stream;
-        stream.flush()
+        let _ = stream.flush();
     };
     flush(stdout);
     flush(stderr);

src/header/stdio/scanf.rs

@@ -239,13 +239,13 @@ unsafe fn inner_scanf(
                             }
                         }};
                         (c_double) => {
-                            parse_type!(noformat c_double);
+                            parse_type!(noformat c_double)
                         };
                         (c_float) => {
-                            parse_type!(noformat c_float);
+                            parse_type!(noformat c_float)
                         };
                         ($type:ident) => {
-                            parse_type!($type, $type);
+                            parse_type!($type, $type)
                         };
                         ($type:ident, $final:ty) => {{
                             let n = if n.is_empty() {