B-0 added cast to prevent warning when compiling in 64 bits
B-0 added cast to prevent warning when compiling in 64 bits

Convey-Compliance/mongo-c-driver,Convey-Compliance/mongo-c-driver,jsbattig/mongo-c-driver,jsbattig/mongo-c-driver,Convey-Compliance/mongo-c-driver,jsbattig/mongo-c-driver,Convey-Compliance/mongo-c-driver,eugene-convey/mongo-c-driver,eugene-convey/mongo-c-driver,Convey-Compliance/mongo-c-driver,eugene-convey/mongo-c-driver