Fix nested read lock (#139)

orientlu · brocaar · commit 357968ad012c · 2019-10-21T15:21:30.000+02:00
Closes #138.
diff --git a/internal/backend/semtechudp/backend.go b/internal/backend/semtechudp/backend.go
@@ -422,9 +422,6 @@ func (b *Backend) handleTXACK(up udpPacket) error {
 		return err
 	}
 
-	b.RLock()
-	defer b.RUnlock()
-
 	downID := b.tokenMap[p.RandomToken]
 
 	if p.Payload != nil && p.Payload.TXPKACK.Error != "" && p.Payload.TXPKACK.Error != "NONE" {

Original file line number	Diff line number	Diff line change
`@@ -422,9 +422,6 @@ func (b *Backend) handleTXACK(up udpPacket) error {`
`422`	`422`	`return err`
`423`	`423`	`}`
`424`	`424`
`425`		`- b.RLock()`
`426`		`- defer b.RUnlock()`
`427`		`-`
`428`	`425`	`downID := b.tokenMap[p.RandomToken]`
`429`	`426`
`430`	`427`	`if p.Payload != nil && p.Payload.TXPKACK.Error != "" && p.Payload.TXPKACK.Error != "NONE" {`