Merge pull request #386 from luke-dixon/fix_sp_devinfo_data_struct_layout

Correct layout of SP_DEVINFO_DATA struct

Author: AArnott

src/SetupApi/SetupApi+SP_DEVINFO_DATA.cs

@@ -22,6 +22,12 @@ public partial class SetupApi
         [StructLayout(LayoutKind.Sequential, Pack = 1)]
         public struct SP_DEVINFO_DATA
         {
+            /// <summary>
+            /// The size, in bytes, of the <see cref="SP_DEVINFO_DATA" /> structure. The constructor set this value automatically
+            /// to the correct size.
+            /// </summary>
+            public int Size;
+
             /// <summary>
             /// The GUID of the device's setup class.
             /// </summary>
@@ -42,12 +48,6 @@ public struct SP_DEVINFO_DATA
             /// </summary>
             public IntPtr Reserved;
 
-            /// <summary>
-            /// The size, in bytes, of the <see cref="SP_DEVINFO_DATA" /> structure. The constructor set this value automatically
-            /// to the correct size.
-            /// </summary>
-            public int Size;
-
             /// <summary>
             /// Initializes a new instance of the <see cref="SP_DEVINFO_DATA" /> struct
             /// with <see cref="Size" /> set to the correct value.