Update libc to 0.2.68
@@ -16,7 +16,7 @@ exclude = [
]
[dependencies]
-libc = { version = "0.2.60", features = [ "extra_traits" ] }
+libc = { version = "0.2.68", features = [ "extra_traits" ] }
bitflags = "1.1"
cfg-if = "0.1.10"
void = "1.0.2"
