Post-rebase fix

Author: elizarov

core/kotlinx-coroutines-core/src/main/kotlin/kotlinx/coroutines/experimental/channels/Channels.kt

@@ -17,6 +17,7 @@
 package kotlinx.coroutines.experimental.channels
 
 import kotlinx.coroutines.experimental.Unconfined
+import kotlinx.coroutines.experimental.runBlocking
 import kotlin.coroutines.experimental.CoroutineContext
 
 internal const val DEFAULT_CLOSE_MESSAGE = "Channel was closed"