librustdoc: inline and forward all methods for impl Write for Buffer

Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>

src/librustdoc/html/format.rs

@@ -65,9 +65,20 @@ crate struct Buffer {
 }
 
 impl core::fmt::Write for Buffer {
+    #[inline]
     fn write_str(&mut self, s: &str) -> fmt::Result {
         self.buffer.write_str(s)
     }
+
+    #[inline]
+    fn write_char(&mut self, c: char) -> fmt::Result {
+        self.buffer.write_char(c)
+    }
+
+    #[inline]
+    fn write_fmt(self: &mut Self, args: fmt::Arguments<'_>) -> fmt::Result {
+        self.buffer.write_fmt(args)
+    }
 }
 
 impl Buffer {