[connector/routing] Fix configuration error with request context

Remove a residual fallthrough keyword

Fixes open-telemetry#37410

Author: vlaborie

CHANGELOG.md

@@ -7,6 +7,10 @@ If you are looking for developer-facing changes, check out [CHANGELOG-API.md](./
 
 <!-- next version -->
 
+### 🧰 Bug fixes 🧰
+
+- `routingconnector`: Fix config validation when using request context. (#37410)
+
 ## v0.118.0
 
 ### 🛑 Breaking changes 🛑

connector/routingconnector/config.go

@@ -76,7 +76,6 @@ func (c *Config) Validate() error {
 			if _, err := parseRequestCondition(item.Condition); err != nil {
 				return err
 			}
-			fallthrough
 		default:
 			return errors.New("invalid context: " + item.Context)
 		}