fixup: style

Author: asomers

src/unix/linux_like/mod.rs

@@ -574,10 +574,13 @@ pub const SIGALRM: ::c_int = 14;
 pub const SIGTERM: ::c_int = 15;
 
 const SIGEV_MAX_SIZE: usize = 64;
-#[cfg(target_pointer_width = "64")]
-const __ARCH_SIGEV_PREAMBLE_SIZE: usize = 4 * 2 + 8;
-#[cfg(target_pointer_width = "32")]
-const __ARCH_SIGEV_PREAMBLE_SIZE: usize = 4 * 2 + 4;
+cfg_if! {
+    if #[cfg(target_pointer_width = "64")] {
+        const __ARCH_SIGEV_PREAMBLE_SIZE: usize = 4 * 2 + 8;
+    } else {
+        const __ARCH_SIGEV_PREAMBLE_SIZE: usize = 4 * 2 + 4;
+    }
+}
 const SIGEV_PAD_SIZE: usize = (SIGEV_MAX_SIZE - __ARCH_SIGEV_PREAMBLE_SIZE) / 4;
 
 pub const PROT_NONE: ::c_int = 0;