Fix various Findbugs warnings:

Matthew Swift

25.08.2014 77b43a1d03725669362ff6b4740b8650770a2efb

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svnkit.version=1.7.5-v1
build.number=r9382_v20120718_1415
 
#properties for SVN runtime
svnkit.version.string=SVN/1.7.5 SVNKit/1.7.5-v1 (http://svnkit.com/) r9382_v20120718_1415
svnkit.version.major=1
svnkit.version.minor=7
svnkit.version.micro=5
svnkit.version.revision=r9382_v20120718_1415
 
svnkit.svn.version=1.7.5