minor clippy lints

Author: dginev

build.rs

@@ -2,9 +2,7 @@ extern crate pkg_config;
 use pkg_config::find_library;
 
 fn main() {
-  if find_library("libxslt").is_ok() {
-    return;
-  } else {
+  if find_library("libxslt").is_err() {
     panic!("Could not find libxslt using pkg-config");
   }
   // // The bindgen::Builder is the main entry point

src/stylesheet.rs

@@ -29,7 +29,7 @@ impl Stylesheet {
   }
 
   /// Transforms a libxml `Document` per the current stylesheet
-  pub fn transform(&mut self, doc: &Document) -> Result<Document, Box<Error>> {
+  pub fn transform(&mut self, doc: &Document) -> Result<Document, Box<dyn Error>> {
     let ctxt = self.build_context(doc)?;
 
     // ctxt.xinclude = 1;