From f12e1b96e2aee33432345e0e0b763ad4109bd58a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kornel=20Lesi=C5=84ski?= <kornel@geekhood.net>
Date: Mon, 14 Jan 2019 21:36:38 +0000
Subject: [PATCH] No cloning when restoring original data

---
 src/lib.rs     | 2 +-
 src/png/mod.rs | 9 ---------
 2 files changed, 1 insertion(+), 10 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index e1fecc5b..4032b9c7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -655,7 +655,7 @@ fn optimize_png(png: &mut PngData, original_data: &[u8], opts: &Options) -> PngR
                 );
             }
         } else if reduction_occurred {
-            png.reset_from_original(&original_png);
+            *png = original_png;
         }
     }
 
diff --git a/src/png/mod.rs b/src/png/mod.rs
index 25526cdc..af326676 100644
--- a/src/png/mod.rs
+++ b/src/png/mod.rs
@@ -163,15 +163,6 @@ impl PngData {
         }
     }
 
-    pub(crate) fn reset_from_original(&mut self, original: &Self) {
-        self.idat_data = original.idat_data.clone();
-        self.ihdr_data = original.ihdr_data;
-        self.raw_data = original.raw_data.clone();
-        self.palette = original.palette.clone();
-        self.transparency_pixel = original.transparency_pixel.clone();
-        self.aux_headers = original.aux_headers.clone();
-    }
-
     /// Return the number of channels in the image, based on color type
     #[inline]
     pub fn channels_per_pixel(&self) -> u8 {