In the default constructor call BuildOptions to initialize internal structures. This prevents crashes when calling functions like Sumw2 or other stupid calls made to an object created with thsi default constructor.
In the default constructor call BuildOptions to initialize internal
structures. This prevents crashes when calling functions like Sumw2
or other stupid calls made to an object created with thsi default constructor.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@6357 27541ba8-7e3a-0410-8455-c3a389f83636

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