runtime: revert UseSpanType back to 1

R=golang-dev
CC=golang-dev
https://golang.org/cl/7812043

diff --git a/src/pkg/runtime/runtime.h b/src/pkg/runtime/runtime.h
index 8858922b7510bb33052f09e95cc89cfb851c0ee0..e2c35e1657c11ddc05aa215e230e967506ddb8f8 100644 (file)
--- a/src/pkg/runtime/runtime.h
+++ b/src/pkg/runtime/runtime.h
@@ -991,5 +991,5 @@ extern uint64 ·neginf;
 
 enum
 {
-       UseSpanType = 0,
+       UseSpanType = 1,
 };