[rpc] fix subscribing using an abci.ResponseDeliverTx tag

Refs #1369

CHANGELOG.md

@@ -27,13 +27,15 @@ BUG FIXES:
 
 ## 0.17.2 (TBD)
 
+BUG FIXES:
+- [rpc] fix subscribing using an abci.ResponseDeliverTx tag
+
 IMPROVEMENTS:
 - [rpc] `/tx` and `/tx_search` responses now include the transaction hash
 
 ## 0.17.1 (March 27th, 2018)
 
 BUG FIXES:
-
 - [types] Actually support `app_state` in genesis as `AppStateJSON`
 
 ## 0.17.0 (March 27th, 2018)

types/event_bus.go

@@ -101,7 +101,7 @@ func (b *EventBus) PublishEventTx(event EventDataTx) error {
 			b.Logger.Info("Got tag with an empty key (skipping)", "tag", tag, "tx", event.Tx)
 			continue
 		}
-		tags[string(tag.Key)] = tag.Value
+		tags[string(tag.Key)] = string(tag.Value)
 	}
 
 	// add predefined tags