Qualified the use of 'set', removing ambiguity that could cause build
errors with some compilers. Resolves arq5x/bedtools2#538.
@@ -123,7 +123,7 @@ protected:
bool _useFullBamTags;
//members for enforcing sorted order.
- set<string> _foundChroms;
+ std::set<string> _foundChroms;
string _prevChrom;
int _prevStart;
int _prevChromId;
