Fixed crash when using Allowed/Denied Viewers, and the viewer's name is shorter than one of the test strings
Fixed crash when using Allowed/Denied Viewers, and the viewer's name is shorter than one of the test strings

This fixes http://opensimulator.org/mantis/view.php?id=7294

RavenB/opensim,RavenB/opensim,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,QuillLittlefeather/opensim-1,OpenSimian/opensimulator,M-O-S-E-S/opensim,M-O-S-E-S/opensim,TomDataworks/opensim,OpenSimian/opensimulator,TomDataworks/opensim,M-O-S-E-S/opensim,TomDataworks/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,OpenSimian/opensimulator,OpenSimian/opensimulator,OpenSimian/opensimulator,RavenB/opensim,RavenB/opensim,QuillLittlefeather/opensim-1,OpenSimian/opensimulator,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,M-O-S-E-S/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,RavenB/opensim,QuillLittlefeather/opensim-1,RavenB/opensim,EriHoss/OpenSim_0.8.2.0_Dev_LibLSLCC,RavenB/opensim,QuillLittlefeather/opensim-1,TomDataworks/opensim,TomDataworks/opensim,QuillLittlefeather/opensim-1,TomDataworks/opensim,QuillLittlefeather/opensim-1,QuillLittlefeather/opensim-1,OpenSimian/opensimulator