[BUG] scalar leaks when running nds query51

[jbrennan333]

Describe the bug
When running nds query51 on my desktop at scale 100, I am seeing some leaked scalars:

24/02/27 22:55:04 ERROR Scalar: A SCALAR WAS LEAKED(ID: 1514186 7f408402c1a0)

It looks like these are coming from SumBinaryFixer:

24/02/27 22:55:04 ERROR MemoryCleaner: Leaked scalar (ID: 1508241): 2024-02-27 22:54:59.0732 UTC: INC
java.lang.Thread.getStackTrace(Thread.java:1564)
ai.rapids.cudf.MemoryCleaner$RefCountDebugItem.<init>(MemoryCleaner.java:341)
ai.rapids.cudf.MemoryCleaner$Cleaner.addRef(MemoryCleaner.java:90)
ai.rapids.cudf.Scalar.incRefCount(Scalar.java:540)
ai.rapids.cudf.Scalar.<init>(Scalar.java:528)
ai.rapids.cudf.ColumnView.getScalarElement(ColumnView.java:4002)
com.nvidia.spark.rapids.window.SumBinaryFixer.$anonfun$updateState$11(GpuWindowExpression.scala:1412)
scala.Option.map(Option.scala:230)
com.nvidia.spark.rapids.window.SumBinaryFixer.updateState(GpuWindowExpression.scala:1412)
com.nvidia.spark.rapids.window.SumBinaryFixer.$anonfun$fixUpDecimal$24(GpuWindowExpression.scala:1588)
com.nvidia.spark.rapids.Arm$.closeOnExcept(Arm.scala:98)
com.nvidia.spark.rapids.window.SumBinaryFixer.$anonfun$fixUpDecimal$23(GpuWindowExpression.scala:1587)
com.nvidia.spark.rapids.Arm$.withResource(Arm.scala:30)
com.nvidia.spark.rapids.window.SumBinaryFixer.$anonfun$fixUpDecimal$20(GpuWindowExpression.scala:1586)
com.nvidia.spark.rapids.Arm$.withResource(Arm.scala:30)
com.nvidia.spark.rapids.window.SumBinaryFixer.fixUpDecimal(GpuWindowExpression.scala:1580)
com.nvidia.spark.rapids.window.SumBinaryFixer.fixUp(GpuWindowExpression.scala:1600)
com.nvidia.spark.rapids.window.GpuRunningWindowIterator.$anonfun$fixUpAll$2(GpuRunningWindowExec.scala:105)
com.nvidia.spark.rapids.window.GpuRunningWindowIterator.$anonfun$fixUpAll$2$adapted(GpuRunningWindowExec.scala:101)

It looks like previousOverflow is not being closed in the close method.

Steps/Code to reproduce bug
Run nds query51 and observe errors in output.

Expected behavior
We should not leak scalars.

[jbrennan333]

I am also seeing this in a query93 when I run with ShuffleExchangeExec disabled (which I am doing for testing other things).