Update UTF8Reader to fix slice bounds out of range error

Godeps/Godeps.json

@@ -22,7 +22,7 @@
 		},
 		{
 			"ImportPath": "github.com/yudai/utf8reader",
-			"Rev": "543610cf49fc1279921d6ef1b7f7773ebece14f8"
+			"Rev": "0ccad3e5e2d8dc2493179319c4c8d1172f583ea4"
 		}
 	]
 }

Godeps/_workspace/src/github.com/yudai/utf8reader/LICENSE

+The MIT License (MIT)
+
+Copyright (c) 2015 Iwasaki Yudai
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Godeps/_workspace/src/github.com/yudai/utf8reader/README.md

@@ -63,3 +63,7 @@ Of course, bytes left behind will be used to fill up the buffer on next `Read()`
 ## Note
 
 UTF8Reader just checks incomplete bytes at the tail of the buffer. Even if the original byte sequence given to UTF8Reader is broken, UTF8Reader reports no errors and just fills up the buffer.
+
+## License
+
+The MIT License

Godeps/_workspace/src/github.com/yudai/utf8reader/utf8reader.go

@@ -43,7 +43,7 @@ func (r *UTF8Reader) Read(p []byte) (n int, err error) {
 	}
 
 	leftOver := 0
-	for ; leftOver < utf8.UTFMax; leftOver++ {
+	for ; leftOver < utf8.UTFMax && size-leftOver > 0; leftOver++ {
 		rune, _ := utf8.DecodeLastRune(p[:size-leftOver])
 		if rune != utf8.RuneError {
 			break

Godeps/_workspace/src/github.com/yudai/utf8reader/utf8reader_test.go

@@ -77,3 +77,21 @@ func TestReadWithSmallBuffer(t *testing.T) {
 		t.Errorf("Expected error were not returned")
 	}
 }
+
+func TestReadWithSmallRead(t *testing.T) {
+	input := []byte("いろは")
+	or := bytes.NewBuffer(input[0:2]) // small read
+	r := New(or)
+	buf := make([]byte, 512)
+
+	_, err := r.Read(buf)
+	if err != nil {
+		t.Errorf("Unexpected error")
+	}
+
+	or.Write(input[2:6])
+	_, err = r.Read(buf)
+	if err != nil {
+		t.Errorf("Unexpected error")
+	}
+}