vendor: update klauspost/reedsomon package with upstream changes. (#1912)

vendor/github.com/klauspost/reedsolomon/appveyor.yml

@@ -0,0 +1,20 @@
+os: Visual Studio 2015
+
+platform: x64
+
+clone_folder: c:\gopath\src\github.com\klauspost\reedsolomon
+
+# environment variables
+environment:
+  GOPATH: c:\gopath
+
+install:
+  - echo %PATH%
+  - echo %GOPATH%
+  - go version
+  - go env
+  - go get -d ./...
+
+build_script:
+  - go test -v -cpu=2 ./...
+  - go test -cpu=1,2,4 -short -race ./...

vendor/github.com/klauspost/reedsolomon/reedsolomon.go

@@ -85,10 +85,14 @@ type reedSolomon struct {
 }
 
 // ErrInvShardNum will be returned by New, if you attempt to create
-// an Encoder where either data or parity shards is zero or less,
+// an Encoder where either data or parity shards is zero or less.
-// or the number of data shards is higher than 256.
 var ErrInvShardNum = errors.New("cannot create Encoder with zero or less data/parity shards")
 
+// ErrMaxShardNum will be returned by New, if you attempt to create
+// an Encoder where data and parity shards cannot be bigger than
+// Galois field GF(2^8) - 1.
+var ErrMaxShardNum = errors.New("cannot create Encoder with 255 or more data+parity shards")
+
 // New creates a new encoder and initializes it to
 // the number of data shards and parity shards that
 // you want to use. You can reuse this encoder.
@@ -104,8 +108,8 @@ func New(dataShards, parityShards int) (Encoder, error) {
 		return nil, ErrInvShardNum
 	}
 
-	if dataShards > 256 {
+	if dataShards+parityShards > 255 {
-		return nil, ErrInvShardNum
+		return nil, ErrMaxShardNum
 	}
 
 	// Start with a Vandermonde matrix.  This matrix would work,

vendor/vendor.json

@@ -69,8 +69,8 @@
 		},
 		{
 			"path": "github.com/klauspost/reedsolomon",
-			"revision": "4fadad856421f3f13883bd681de8a9283809076e",
+			"revision": "2fde63d2889a399426862a16611c489b1fed87bc",
-			"revisionTime": "2016-05-01T12:00:51+02:00"
+			"revisionTime": "2016-06-04T08:05:20+02:00"
 		},
 		{
 			"path": "github.com/mattn/go-colorable",