opencv: 3.4.2 -> 3.4.3

pkgs/development/libraries/opencv/3.x.nix

@@ -35,20 +35,20 @@
 }:
 
 let
-  version = "3.4.2";
+  version = "3.4.3";
 
   src = fetchFromGitHub {
     owner  = "opencv";
     repo   = "opencv";
     rev    = version;
-    sha256 = "0q752s1ir6iyqbp3pn425fi215fi7bzjl4aa3arvgh6sridda9lx";
+    sha256 = "138q3wiv4g4xvqzsp93xaqayv7kz7bl2vrgppp8jm8w6m25cd4i2";
   };
 
   contribSrc = fetchFromGitHub {
     owner  = "opencv";
     repo   = "opencv_contrib";
     rev    = version;
-    sha256 = "1fbgbf9xdby9a5yy6bmnkzchdsfii0jagfd373y015cjpr1mrlvz";
+    sha256 = "1f334glf39nk42mpqq6j732h3ql2mpz89jd4mcl678s8n73nfjh2";
   };
 
   # Contrib must be built in order to enable Tesseract support:
@@ -145,11 +145,6 @@ stdenv.mkDerivation rec {
     cp --no-preserve=mode -r "${contribSrc}/modules" "$NIX_BUILD_TOP/opencv_contrib"
   '';
 
-  # TODO: remove the following patch once commit
-  # https://github.com/opencv/opencv/commit/e2b5d112909b9dfd764f14833b82e38e4bc2f81f
-  # is released.
-  patches = [ ./fix-dnn.patch ];
-
   # This prevents cmake from using libraries in impure paths (which
   # causes build failure on non NixOS)
   # Also, work around https://github.com/NixOS/nixpkgs/issues/26304 with

pkgs/development/libraries/opencv/fix-dnn.patch

@@ -1,13 +0,0 @@
-diff --git a/modules/dnn/src/caffe/caffe_io.cpp b/modules/dnn/src/caffe/caffe_io.cpp
-index 730c752ce..abbce0453 100644
---- a/modules/dnn/src/caffe/caffe_io.cpp
-+++ b/modules/dnn/src/caffe/caffe_io.cpp
-@@ -1120,7 +1120,7 @@ bool ReadProtoFromTextFile(const char* filename, Message* proto) {
-     std::ifstream fs(filename, std::ifstream::in);
-     CHECK(fs.is_open()) << "Can't open \"" << filename << "\"";
-     IstreamInputStream input(&fs);
--    return google::protobuf::TextFormat::Parser(true).Parse(&input, proto);
-+    return google::protobuf::TextFormat::Parser().Parse(&input, proto);
- }
- 
- bool ReadProtoFromBinaryFile(const char* filename, Message* proto) {