Fix warnings on 32-bit builds (#853)
Fix warnings on 32-bit builds (#853)

Fix warnings on 32-bit builds.

Resolves #852.
Praetonus/ponyc,Theodus/ponyc,sgebbie/ponyc,kulibali/ponyc,sgebbie/ponyc,ponylang/ponyc,cquinn/ponyc,malthe/ponyc,mkfifo/ponyc,dipinhora/ponyc,sgebbie/ponyc,jupvfranco/ponyc,dipinhora/ponyc,jupvfranco/ponyc,malthe/ponyc,mkfifo/ponyc,Theodus/ponyc,CausalityLtd/ponyc,kulibali/ponyc,Praetonus/ponyc,Perelandric/ponyc,boemmels/ponyc,sgebbie/ponyc,Perelandric/ponyc,sgebbie/ponyc,jupvfranco/ponyc,ponylang/ponyc,Praetonus/ponyc,mkfifo/ponyc,malthe/ponyc,jemc/ponyc,Perelandric/ponyc,CausalityLtd/ponyc,Praetonus/ponyc,cquinn/ponyc,Perelandric/ponyc,kulibali/ponyc,jupvfranco/ponyc,boemmels/ponyc,cquinn/ponyc,kulibali/ponyc,mkfifo/ponyc,Theodus/ponyc,jemc/ponyc,lukecheeseman/ponyta,jupvfranco/ponyc,cquinn/ponyc,lukecheeseman/ponyta,ponylang/ponyc,lukecheeseman/ponyta,boemmels/ponyc,Theodus/ponyc,mkfifo/ponyc,Theodus/ponyc,dipinhora/ponyc,ryanai3/ponyc,ryanai3/ponyc,CausalityLtd/ponyc,boemmels/ponyc,ryanai3/ponyc,jemc/ponyc,Perelandric/ponyc,boemmels/ponyc,malthe/ponyc