Removed use of std::map::at() in HttpHeader, not a standard STL method
Removed use of std::map::at() in HttpHeader, not a standard STL method

kdmurray91/bamtools,SANBI-SA/bamtools,pezmaster31/bamtools,kdmurray91/bamtools,iontorrent/bamtools,boratonAJ/bamtools,SANBI-SA/bamtools,domibel/bamtools,pezmaster31/bamtools,pezmaster31/bamtools,sksaskrobinsons/code,sksaskrobinsons/code,domibel/bamtools,boratonAJ/bamtools,pezmaster31/bamtools,iontorrent/bamtools