Add a few protections such that the object can be reused after TBits::Clear. TBits::Clear sets fNbits and fNbytes to 0.
Add a few protections such that the object can be reused after TBits::Clear.
TBits::Clear sets fNbits and fNbytes to 0.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@7853 27541ba8-7e3a-0410-8455-c3a389f83636

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