Auto merge of #1531 - gnzlbg:fixs, r=gnzlbg

Fix max_align_t

src/windows/gnu/align.rs

 cfg_if! {
     if #[cfg(target_pointer_width = "64")] {
-        #[derive(Copy, Clone, Debug, PartialEq)]
-        #[repr(C, align(16))] pub struct max_align_t([f64; 4]);
+        s_no_extra_traits! {
+            #[allow(missing_debug_implementations)]
+            #[repr(align(16))]
+            pub struct max_align_t {
+                priv_: [f64; 4]
+            }
+        }
     } else if #[cfg(target_pointer_width = "32")] {
-        #[derive(Copy, Clone, Debug, PartialEq)]
-        #[repr(C, align(16))] pub struct max_align_t([i64; 6]);
+        s_no_extra_traits! {
+            #[allow(missing_debug_implementations)]
+            #[repr(align(16))]
+            pub struct max_align_t {
+                priv_: [i64; 6]
+            }
+        }
     }
 }