lib/thread/pool.rb in thread-0.2.1 vs lib/thread/pool.rb in thread-0.2.2

@@ -81,10 +81,10 @@
 			@thread   = nil
 		end
 
 		# Raise an exception in the thread used by the task.
 		def raise(exception)
-			@thread.raise(exception)
+			@thread.raise(exception) if @thread
 		end
 
 		# Terminate the exception with an optionally given exception.
 		def terminate!(exception = Asked)
 			return if terminated? || finished? || timeout?