Fix missing std::char_traits<uint8_t> (if it is in fact missing). #1812#1829

leakingmemory wants to merge 4 commits intomicrosoft:mastermicrosoft/cpprestsdk:masterfrom

leakingmemory:bug/char-traits-uint8-issue-1812leakingmemory/cpprestsdk:bug/char-traits-uint8-issue-1812Copy head branch name to clipboard