handler: minor optimization of result decoding

When both an error and a result are reported, check the error before interfacing the result.
creachadair · Sep 10, 2021 · 73131c9 · 73131c9
1 parent 9ec94a8
commit 73131c9
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/handler/handler.go b/handler/handler.go
@@ -195,11 +195,10 @@ func (fi *FuncInfo) Wrap() Func {
 	} else {
 		// The function returns both a value and an error.
 		decodeOut = func(vals []reflect.Value) (interface{}, error) {
-			out, oerr := vals[0].Interface(), vals[1].Interface()
-			if oerr != nil {
+			if oerr := vals[1].Interface(); oerr != nil {
 				return nil, oerr.(error)
 			}
-			return out, nil
+			return vals[0].Interface(), nil
 		}
 	}