src/net/http/h2_bundle.go | 10 ++++++++++

diff --git a/src/net/http/h2_bundle.go b/src/net/http/h2_bundle.go
index 29296991ef386c68afdbe41643dac91cb1d4bf80..b03b84d2f309571df1f0c2721fc760634ca7aa2d 100644
--- a/src/net/http/h2_bundle.go
+++ b/src/net/http/h2_bundle.go
@@ -7168,6 +7168,7 @@ 	cc.fr.WriteWindowUpdate(0, http2transportDefaultConnFlow)
 	cc.inflow.add(http2transportDefaultConnFlow + http2initialWindowSize)
 	cc.bw.Flush()
 	if cc.werr != nil {
+		cc.Close()
 		return nil, cc.werr
 	}
 
@@ -7532,6 +7533,15 @@ 	cs.trace = httptrace.ContextClientTrace(req.Context())
 	cs.requestedGzip = requestedGzip
 	bodyWriter := cc.t.getBodyWriterState(cs, body)
 	cs.on100 = bodyWriter.on100
+
+	defer func() {
+		cc.wmu.Lock()
+		werr := cc.werr
+		cc.wmu.Unlock()
+		if werr != nil {
+			cc.Close()
+		}
+	}()
 
 	cc.wmu.Lock()
 	endStream := !hasBody && !hasTrailers