2.8 regression: Stream.map() leaks memory

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2.8:

Welcome to Scala version 2.8.0.r18467-b20090812095157 (Java HotSpot(TM) Client VM, Java 1.5.0_20).
scala> val it = Stream.from(0).map(x => x).iterator; while(true) { it.next } 
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space

the same code works fine in 2.7. the map() is crucial; without it the code doesn't run out of memory.

related: #692

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Imported From: https://issues.scala-lang.org/browse/SI-2265?orig=1
Reporter: @SethTisue

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@dragos said:
Fixed by Martin in r18506.