HighlightingAssets: Inline find_syntax_by_file_name() and find_syntax_by_file_name_extension()

There is no benefit to keeping separate functions.

src/assets.rs

@@ -258,9 +258,14 @@ impl HighlightingAssets {
     }
 
     fn get_extension_syntax(&self, file_name: &OsStr) -> Result<Option<SyntaxReferenceInSet>> {
-        let mut syntax = self.find_syntax_by_file_name(file_name)?;
+        let mut syntax = self.find_syntax_by_extension(file_name.to_str().unwrap_or_default())?;
         if syntax.is_none() {
-            syntax = self.find_syntax_by_file_name_extension(file_name)?;
+            syntax = self.find_syntax_by_extension(
+                Path::new(file_name)
+                    .extension()
+                    .and_then(|x| x.to_str())
+                    .unwrap_or_default(),
+            )?;
         }
         if syntax.is_none() {
             syntax = try_with_stripped_suffix(file_name, |stripped_file_name| {
@@ -270,22 +275,6 @@ impl HighlightingAssets {
         Ok(syntax)
     }
 
-    fn find_syntax_by_file_name(&self, file_name: &OsStr) -> Result<Option<SyntaxReferenceInSet>> {
-        self.find_syntax_by_extension(file_name.to_str().unwrap_or_default())
-    }
-
-    fn find_syntax_by_file_name_extension(
-        &self,
-        file_name: &OsStr,
-    ) -> Result<Option<SyntaxReferenceInSet>> {
-        self.find_syntax_by_extension(
-            Path::new(file_name)
-                .extension()
-                .and_then(|x| x.to_str())
-                .unwrap_or_default(),
-        )
-    }
-
     fn get_first_line_syntax(
         &self,
         reader: &mut InputReader,