apr: 1.7.2 -> 1.7.4

pkgs/development/libraries/apr/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "apr";
-  version = "1.7.2";
+  version = "1.7.4";
 
   src = fetchurl {
     url = "mirror://apache/apr/${pname}-${version}.tar.bz2";
-    sha256 = "sha256-ded8yGd2wDDApcQI370L8qC3Xu1TUeUtVDn6HlUJpD4=";
+    sha256 = "sha256-/GSN6YPzoqbJ543qHxgGOb0vrWwG1VbUNnpwH+XDVXc=";
   };
 
   patches = [