Raise the cfg-if dependency to 1.0.2

1.0.2 adds the ability to omit the else clause, a feature we use.

Author: asomers

Cargo.toml

@@ -18,7 +18,7 @@ exclude     = [
 [dependencies]
 libc = { git = "https://github.com/rust-lang/libc" }
 bitflags = "1.0"
-cfg-if = "0.1.0"
+cfg-if = "0.1.2"
 void = "1.0.2"
 
 [target.'cfg(target_os = "dragonfly")'.build-dependencies]