Fix build on rustc <1.26

See:
- rust-lang/rust#42640
- https://blog.rust-lang.org/2018/05/10/Rust-1.26.html#nicer-match-bindings

Author: fabianfreyer

src/lib.rs

@@ -191,25 +191,25 @@ impl<'a> convert::From<&'a CtlValue> for CtlType {
 impl CtlType {
     fn min_type_size(self: &Self) -> usize {
         match self {
-            CtlType::None => 0,
-            CtlType::Node => 0,
-            CtlType::Int => mem::size_of::<libc::c_int>(),
-            CtlType::String => 0,
-            CtlType::S64 => mem::size_of::<i64>(),
-            CtlType::Struct => 0,
-            CtlType::Uint => mem::size_of::<libc::c_uint>(),
-            CtlType::Long => mem::size_of::<libc::c_long>(),
-            CtlType::Ulong => mem::size_of::<libc::c_ulong>(),
-            CtlType::U64 => mem::size_of::<u64>(),
-            CtlType::U8 => mem::size_of::<u8>(),
-            CtlType::U16 => mem::size_of::<u16>(),
-            CtlType::S8 => mem::size_of::<i8>(),
-            CtlType::S16 => mem::size_of::<i16>(),
-            CtlType::S32 => mem::size_of::<i32>(),
-            CtlType::U32 => mem::size_of::<u32>(),
+            &CtlType::None => 0,
+            &CtlType::Node => 0,
+            &CtlType::Int => mem::size_of::<libc::c_int>(),
+            &CtlType::String => 0,
+            &CtlType::S64 => mem::size_of::<i64>(),
+            &CtlType::Struct => 0,
+            &CtlType::Uint => mem::size_of::<libc::c_uint>(),
+            &CtlType::Long => mem::size_of::<libc::c_long>(),
+            &CtlType::Ulong => mem::size_of::<libc::c_ulong>(),
+            &CtlType::U64 => mem::size_of::<u64>(),
+            &CtlType::U8 => mem::size_of::<u8>(),
+            &CtlType::U16 => mem::size_of::<u16>(),
+            &CtlType::S8 => mem::size_of::<i8>(),
+            &CtlType::S16 => mem::size_of::<i16>(),
+            &CtlType::S32 => mem::size_of::<i32>(),
+            &CtlType::U32 => mem::size_of::<u32>(),
             // Added custom types below
             #[cfg(not(target_os = "macos"))]
-            CtlType::Temperature => 0,
+            &CtlType::Temperature => 0,
         }
     }
 }