fix a potential division by zero
fix a potential division by zero

OpenSimian/opensimulator,OpenSimian/opensimulator,ft-/opensim-optimizations-wip-tests,ft-/arribasim-dev-tests,ft-/opensim-optimizations-wip-extras,ft-/opensim-optimizations-wip-tests,ft-/opensim-optimizations-wip,QuillLittlefeather/opensim-1,RavenB/opensim,ft-/arribasim-dev-extras,justinccdev/opensim,BogusCurry/arribasim-dev,ft-/opensim-optimizations-wip-extras,rryk/omp-server,ft-/opensim-optimizations-wip,TomDataworks/opensim,Michelle-Argus/ArribasimExtract,allquixotic/opensim-autobackup,ft-/arribasim-dev-tests,QuillLittlefeather/opensim-1,M-O-S-E-S/opensim,bravelittlescientist/opensim-performance,RavenB/opensim,justinccdev/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,rryk/omp-server,M-O-S-E-S/opensim,OpenSimian/opensimulator,ft-/arribasim-dev-extras,Michelle-Argus/ArribasimExtract,justinccdev/opensim,ft-/opensim-optimizations-wip,TomDataworks/opensim,QuillLittlefeather/opensim-1,RavenB/opensim,OpenSimian/opensimulator,ft-/arribasim-dev-extras,BogusCurry/arribasim-dev,Michelle-Argus/ArribasimExtract,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,rryk/omp-server,justinccdev/opensim,allquixotic/opensim-autobackup,M-O-S-E-S/opensim,ft-/opensim-optimizations-wip-tests,RavenB/opensim,TomDataworks/opensim,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,allquixotic/opensim-autobackup,ft-/arribasim-dev-tests,allquixotic/opensim-autobackup,bravelittlescientist/opensim-performance,M-O-S-E-S/opensim,ft-/arribasim-dev-tests,bravelittlescientist/opensim-performance,RavenB/opensim,bravelittlescientist/opensim-performance,RavenB/opensim,BogusCurry/arribasim-dev,M-O-S-E-S/opensim,QuillLittlefeather/opensim-1,ft-/arribasim-dev-tests,OpenSimian/opensimulator,ft-/opensim-optimizations-wip-tests,rryk/omp-server,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,ft-/arribasim-dev-tests,OpenSimian/opensimulator,Michelle-Argus/ArribasimExtract,rryk/omp-server,ft-/opensim-optimizations-wip-extras,justinccdev/opensim,allquixotic/opensim-autobackup,ft-/opensim-optimizations-wip,BogusCurry/arribasim-dev,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,ft-/opensim-optimizations-wip-tests,OpenSimian/opensimulator,M-O-S-E-S/opensim,bravelittlescientist/opensim-performance,BogusCurry/arribasim-dev,TomDataworks/opensim,rryk/omp-server,RavenB/opensim,TomDataworks/opensim,QuillLittlefeather/opensim-1,Michelle-Argus/ArribasimExtract,M-O-S-E-S/opensim,allquixotic/opensim-autobackup,Michelle-Argus/ArribasimExtract,TomDataworks/opensim,ft-/opensim-optimizations-wip-extras,ft-/arribasim-dev-extras,ft-/arribasim-dev-extras,ft-/opensim-optimizations-wip-extras,QuillLittlefeather/opensim-1,justinccdev/opensim,ft-/arribasim-dev-extras,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,QuillLittlefeather/opensim-1,bravelittlescientist/opensim-performance,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,BogusCurry/arribasim-dev