initialize pointers in LArDigitMon::partition (LArMonTools-02-00-25)

	*  Tagging LArMonTools-02-00-25
	*  initialize variables in struct LArDigitMon::partition.

2014-07-21  Benjamin Trocme
	* Tagging LArMonTools-02-00-24
	* LArFEBMon : adding error type in corrupted tree
	* All algos : shortening/improving main historgrams title

2015-04-19  Hong Ma <hma@bnl.gov>
	*  Tagging LArMonTools-02-00-23
	*  deleting temp histograms in LArDigitMon and LArNoisyROMon finalize method.

2014-07-21  Benjamin Trocme
	* Tagging LArMonTools-02-00-22
	* LArNoisyROMon, LArDigitMon, LArFEBMon : removing histograms deletion at the end of run
	to avoid crashes in case of multi run processing.

2015-04-09 Bruno Lenzi <Bruno.Lenzi@cern.ch>

...
(Long ChangeLog diff - truncated)