vendor: update all dependencies to latest versions

vendor/github.com/pengsrc/go-shared/buffer/bytes_pool.go

@@ -0,0 +1,39 @@
+package buffer
+
+import "sync"
+
+// A BytesBufferPool is a type-safe wrapper around a sync.BytesBufferPool.
+type BytesBufferPool struct {
+	p *sync.Pool
+}
+
+// NewBytesPool constructs a new BytesBufferPool.
+func NewBytesPool() BytesBufferPool {
+	return BytesBufferPool{
+		p: &sync.Pool{
+			New: func() interface{} {
+				return &BytesBuffer{bs: make([]byte, 0, defaultSize)}
+			},
+		},
+	}
+}
+
+// Get retrieves a BytesBuffer from the pool, creating one if necessary.
+func (p BytesBufferPool) Get() *BytesBuffer {
+	buf := p.p.Get().(*BytesBuffer)
+	buf.Reset()
+	buf.pool = p
+	return buf
+}
+
+func (p BytesBufferPool) put(buf *BytesBuffer) {
+	p.p.Put(buf)
+}
+
+// GlobalBytesPool returns the global buffer pool.
+func GlobalBytesPool() *BytesBufferPool {
+	return &bytesPool
+}
+
+// bytesPool is a pool of buffer bytes.
+var bytesPool = NewBytesPool()