panic due to index out of range if a request came in too early about cmux HOT 3 CLOSED

diff --git a/vendor/github.com/soheilhy/cmux/patricia.go b/vendor/github.com/soheilhy/cmux/patricia.go
index 0099e38..a38cae0 100644
--- a/vendor/github.com/soheilhy/cmux/patricia.go
+++ b/vendor/github.com/soheilhy/cmux/patricia.go
@@ -22,8 +22,8 @@ import (
 // patriciaTree is a simple patricia tree that handles []byte instead of string
 // and cannot be changed after instantiation.
 type patriciaTree struct {
-       root *ptNode
-       buf  []byte // preallocated buffer to read data while matching
+       root     *ptNode
+       maxDepth int // max depth of the tree.
 }

 func newPatriciaTree(bs ...[]byte) *patriciaTree {
@@ -34,8 +34,8 @@ func newPatriciaTree(bs ...[]byte) *patriciaTree {
                }
        }
        return &patriciaTree{
-               root: newNode(bs),
-               buf:  make([]byte, max+1),
+               root:     newNode(bs),
+               maxDepth: max + 1,
        }
 }

@@ -48,13 +48,15 @@ func newPatriciaTreeString(strs ...string) *patriciaTree {
 }

 func (t *patriciaTree) matchPrefix(r io.Reader) bool {
-       n, _ := io.ReadFull(r, t.buf)
-       return t.root.match(t.buf[:n], true)
+       buf := make([]byte, t.maxDepth)
+       n, _ := io.ReadFull(r, buf)
+       return t.root.match(buf[:n], true)
 }

 func (t *patriciaTree) match(r io.Reader) bool {
-       n, _ := io.ReadFull(r, t.buf)
-       return t.root.match(t.buf[:n], false)
+       buf := make([]byte, t.maxDepth)
+       n, _ := io.ReadFull(r, buf)
+       return t.root.match(buf[:n], false)
 }

 type ptNode struct {

2016/07/15 07:06:58 starting the HTTP/HTTPS/gRPC server bound to ":8091"
panic: runtime error: index out of range

goroutine 87 [running]:
panic(0xf203a0, 0xc820014010)
        /usr/local/go/src/runtime/panic.go:481 +0x3e6
github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux.(*ptNode).match(0xc82051d950, 0xc82054d388, 0x0, 0x8, 0x1, 0x0)
        /go/src/github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux/patricia.go:164 +0x1f0
github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux.(*patriciaTree).matchPrefix(0xc8205596f0, 0x7fa00d2bcc28, 0xc8202766d0, 0x40cfca)
        /go/src/github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux/patricia.go:53 +0xd7
github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux.(*patriciaTree).(github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux.matchPrefix)-fm(0x7fa00d2bcc28, 0xc8202766d0, 0x7fa00d2a85b0)
        /go/src/github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux/matchers.go:37 +0x34
github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux.matchersToMatchWriters.func1(0x7fa00d2a85b0, 0xc820022518, 0x7fa00d2bcc28, 0xc8202766d0, 0xc820022518)
        /go/src/github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux/cmux.go:112 +0x32
github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux.(*cMux).serve(0xc8202a5000, 0x7fa00d2a7e90, 0xc820022518, 0xc82029b200, 0xc820559730)
        /go/src/github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux/cmux.go:168 +0x33e
created by github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux.(*cMux).Serve
        /go/src/github.com/publica-project/grpc-logger/vendor/github.com/soheilhy/cmux/cmux.go:158 +0x188