Remove warning for integer precision loss when building on 64-bit

[guykogus]

… architecture.

[zenspider]

Where are you seeing warnings? I don't get any before your patch... (I'll still apply, just curious)

[guykogus]

We're using CocoaPods-Keys for an iOS project I'm working on, which is using this project for storing values in the Keychain. When that plug-in is installed for the first time those warnings come up, so I see them every time our continuous integration tasks run.

Also, I'm running macOS Sierra 10.12.3 and when I execute ruby lib/osx_keychain.rb I see those warnings as well, which was how I tested the fix.

[guykogus]

@zenspider will this be merged in?

[loudmouth]

I've also been seeing the same warnings and was curious if they may be causing issues I'm having with my CI as well. I'm all for being warning free and would love to see this merged.

[zenspider]

Can you please change it to match the actual type?

10061 % grep strlen /usr/include/string.h 
size_t	 strlen(const char *__s);

[guykogus]

I'm trying to convert it away from that type, no? I'm trying to match the types used by the Security functions. E.g.

OSStatus SecKeychainAddGenericPassword(SecKeychainRef keychain, UInt32 serviceNameLength, const char *serviceName, UInt32 accountNameLength, const char *accountName, UInt32 passwordLength, const void *passwordData, SecKeychainItemRef _Nullable *itemRef);

[zenspider]

Done. Thanks. Sorry I dragged my feet for so long.