Check marshalled value instead of iface (#1299)

* Check marshalled value Signed-off-by: Daniil Rutskiy <dstdfx@gmail.com> * Update CHANGELOG.md Signed-off-by: Daniil Rutskiy <dstdfx@gmail.com> * Move change to Fixed section Signed-off-by: Daniil Rutskiy <dstdfx@gmail.com> Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
open-telemetry · Nov 2, 2020 · 911d7be · 911d7be
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -47,6 +47,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Fixed
 
 - The `go.opentelemetry.io/otel/api/global` packages global TextMapPropagator now delegates functionality to a globally set delegate for all previously returned propagators. (#1258)
+- Fix condition in `label.Any`. (#1299)
 
 ## [0.13.0] - 2020-10-08
 

diff --git a/label/kv.go b/label/kv.go
@@ -137,7 +137,7 @@ func Any(k string, value interface{}) KeyValue {
 	case reflect.String:
 		return String(k, rv.String())
 	}
-	if b, err := json.Marshal(value); value != nil && err == nil {
+	if b, err := json.Marshal(value); b != nil && err == nil {
 		return String(k, string(b))
 	}
 	return String(k, fmt.Sprint(value))