Applied fix from trunk for revision: 1537023 
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Applied patch from OFBIZ-5359 that fixes an error in the computation of accounting quantity difference: thanks to Michael Ende for the contribution.


git-svn-id: https://svn.apache.org/repos/asf/ofbiz/branches/release13.07@1537025 13f79535-47bb-0310-9956-ffa450edef68