libatomic_ops: 7.8.2 -> 7.8.4

pkgs/by-name/li/libatomic_ops/package.nix

···
 
 stdenv.mkDerivation rec {
   pname = "libatomic_ops";
-  version = "7.8.2";
+  version = "7.8.4";
 
   src = fetchurl {
     urls = [
       "http://www.ivmaisoft.com/_bin/atomic_ops/libatomic_ops-${version}.tar.gz"
       "https://github.com/ivmai/libatomic_ops/releases/download/v${version}/libatomic_ops-${version}.tar.gz"
     ];
-    sha256 = "sha256-0wUgf+IH8rP7XLTAGdoStEzj/LxZPf1QgNhnsaJBm1E=";
+    sha256 = "sha256-I1bgAugO9pWHXpcdak/YxhylxvpP0b8xzOVKJpyL/NU=";
   };
 
   outputs = [