zclwrite: Don't crash if EachToken called on a nil TokenSeq.

2017-06-07 07:39:01 -07:00 · 2017-06-07 07:39:01 -07:00 · ed2a739cdb
commit ed2a739cdb
parent 69a87c73b4
1 changed files with 3 additions and 0 deletions
--- a/zclwrite/tokens.go
+++ b/zclwrite/tokens.go
@ -51,6 +51,9 @@ func (ts Tokens) EachToken(cb TokenCallback) {
 }

 func (ts *TokenSeq) EachToken(cb TokenCallback) {
+	if ts == nil {
+		return
+	}
 	for _, gen := range *ts {
 		gen.EachToken(cb)
 	}