[librsvg: 2/7] Suppress new clippy warnings about suspicious operation groupings

[Federico Mena Quintero <federico src gnome org>]

commit 567f2a41a8972ad630cf2dd426de93284adb021d
Author: Sven Neumann <sven svenfoo org>
Date:   Fri Feb 12 10:22:28 2021 +0100

    Suppress new clippy warnings about suspicious operation groupings
    
    Clippy has no clue about matrix operations, it seems.
    
    https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_operation_groupings

 src/transform.rs | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/transform.rs b/src/transform.rs
index 178f2197..0addc397 100644
--- a/src/transform.rs
+++ b/src/transform.rs
@@ -62,6 +62,8 @@ impl Transform {
 
     #[must_use]
     pub fn multiply(t1: &Transform, t2: &Transform) -> Self {
+        #[allow(clippy::unknown_clippy_lints)]
+        #[allow(clippy::suspicious_operation_groupings)]
         Transform {
             xx: t1.xx * t2.xx + t1.yx * t2.xy,
             yx: t1.xx * t2.yx + t1.yx * t2.yy,