Fix clang build

indra/llappearance/llwearabletype.cpp

indra/llcommon/llexception.cpp

indra/llcorehttp/_thread.h

indra/llprimitive/llmodel.cpp

indra/llxml/llcontrol.cpp

indra/newview/llagentcamera.cpp

indra/newview/llattachmentsmgr.cpp

indra/newview/llavatarlist.cpp

indra/newview/llchathistory.cpp

indra/newview/llvoavatarself.cpp

indra/newview/rlvactions.cpp

indra/newview/rlvhandler.cpp

indra/newview/rlvhandler.h

indra/newview/rlvhelper.cpp

indra/newview/rlvhelper.h

indra/newview/rlvinventory.h

indra/newview/rlvlocks.cpp