From a0a79a9aa3af02ece6d18b5ee91bab9989941a41 Mon Sep 17 00:00:00 2001
From: trav90 <travawine@protonmail.ch>
Date: Wed, 11 Apr 2018 11:14:15 -0500
Subject: [GTK3] Set alpha component appropriately in operator over for
 -moz-field

---
 widget/gtk/nsLookAndFeel.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/widget/gtk/nsLookAndFeel.cpp b/widget/gtk/nsLookAndFeel.cpp
index 562eaa97b..d2b82e495 100644
--- a/widget/gtk/nsLookAndFeel.cpp
+++ b/widget/gtk/nsLookAndFeel.cpp
@@ -75,6 +75,7 @@ ApplyColorOver(const GdkRGBA& aSource, GdkRGBA* aDest) {
         aDest->red = sourceCoef * aSource.red + destCoef * aDest->red;
         aDest->green = sourceCoef * aSource.green + destCoef * aDest->green;
         aDest->blue = sourceCoef * aSource.blue + destCoef * aDest->blue;
+        aDest->alpha = resultAlpha;
     }
 }
 
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