[librsvg: 1/4] Minor style improvement suggested by clippy

[Federico Mena Quintero <federico src gnome org>]

commit 67f1c91914c43e75984a1ff618b043e13d1b9baf
Author: Sven Neumann <sven svenfoo org>
Date:   Mon Aug 24 14:45:00 2020 +0200

    Minor style improvement suggested by clippy
    
    See https://rust-lang.github.io/rust-clippy/master/index.html#blocks_in_if_conditions
    
    Also suppres a clippy warning about type complexity as the
    complexity is infered by the cssparser crate.

 rsvg_internals/src/css.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/rsvg_internals/src/css.rs b/rsvg_internals/src/css.rs
index a6de029b..da32460e 100644
--- a/rsvg_internals/src/css.rs
+++ b/rsvg_internals/src/css.rs
@@ -267,6 +267,7 @@ impl<'i> AtRuleParser<'i> for RuleParser {
     type AtRule = Rule;
     type Error = ParseErrorKind<'i>;
 
+    #[allow(clippy::type_complexity)]
     fn parse_prelude<'t>(
         &mut self,
         name: CowRcStr<'i>,
@@ -709,14 +710,16 @@ impl Stylesheet {
         for rule in &self.qualified_rules {
             for selector in &rule.selectors.0 {
                 // This magic call is stolen from selectors::matching::matches_selector_list()
-                if selectors::matching::matches_selector(
+                let matches = selectors::matching::matches_selector(
                     selector,
                     0,
                     None,
                     &RsvgElement(node.clone()),
                     match_ctx,
                     &mut |_, _| {},
-                ) {
+                );
+
+                if matches {
                     for decl in rule.declarations.iter() {
                         acc.push(Match {
                             declaration: decl,