Fix a bug (thanks to  Elena Gerchtein) in TVector2::Unit In TVector2::Unit() should be 'TVector2()' instead of 'TVector2(0)'. The following code was failing: root [0] TVector2 a(0,0); root [1] a.Unit();
Fix a bug (thanks to  Elena Gerchtein) in TVector2::Unit
In TVector2::Unit() should be 'TVector2()' instead of 'TVector2(0)'.
The following code was failing:
root [0] TVector2 a(0,0);
root [1] a.Unit();


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@4892 27541ba8-7e3a-0410-8455-c3a389f83636

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