eth: uncaptialize tracer preimage error message (#15792)

fjl · karalabe · commit 85a1eda59e44 · 2018-01-03T10:53:09.000+02:00
* eth: uncaptialize tracer preimage error message

* eth: improve very important error message
diff --git a/eth/api_tracer.go b/eth/api_tracer.go
@@ -674,7 +674,7 @@ func (api *PrivateDebugAPI) traceTx(ctx context.Context, message core.Message, v
 		return nil, fmt.Errorf("tracing failed: %v", err)
 	}
 	if err := core.WritePreimages(api.eth.ChainDb(), vmctx.BlockNumber.Uint64(), statedb.Preimages()); err != nil {
-		return nil, fmt.Errorf("Error writing preimage from trace: %v", err)
+		return nil, fmt.Errorf("can't write preimage: %v", err)
 	}
 	// Depending on the tracer type, format and return the output
 	switch tracer := tracer.(type) {

Original file line number	Diff line number	Diff line change
`@@ -674,7 +674,7 @@ func (api *PrivateDebugAPI) traceTx(ctx context.Context, message core.Message, v`
`674`	`674`	`return nil, fmt.Errorf("tracing failed: %v", err)`
`675`	`675`	`}`
`676`	`676`	`if err := core.WritePreimages(api.eth.ChainDb(), vmctx.BlockNumber.Uint64(), statedb.Preimages()); err != nil {`
`677`		`- return nil, fmt.Errorf("Error writing preimage from trace: %v", err)`
	`677`	`+ return nil, fmt.Errorf("can't write preimage: %v", err)`
`678`	`678`	`}`
`679`	`679`	`// Depending on the tracer type, format and return the output`
`680`	`680`	`switch tracer := tracer.(type) {`