d3d9: Pack structures to 4-bytes alignment on x86.

Reported by Christoph von Wittich.

include/d3d9caps.h

@@ -20,6 +20,10 @@
 #ifndef __WINE_D3D9CAPS_H
 #define __WINE_D3D9CAPS_H
 
+#ifdef __i386__
+#include <pshpack4.h>
+#endif
+
 /*
  * Definitions
  */
@@ -392,4 +396,8 @@ typedef struct _D3DCAPS9 {
 
 } D3DCAPS9;
 
+#ifdef __i386__
+#include <poppack.h>
+#endif
+
 #endif

include/d3d9types.h

@@ -21,6 +21,10 @@
 #ifndef __WINE_D3D9TYPES_H
 #define __WINE_D3D9TYPES_H
 
+#ifdef __i386__
+#include <pshpack4.h>
+#endif
+
 /*****************************************************************************
  * Direct 3D v9 #defines
  */
@@ -1580,4 +1584,8 @@ typedef enum _D3DSHADER_COMPARISON
     D3DSPC_RESERVED1,
 } D3DSHADER_COMPARISON;
 
+#ifdef __i386__
+#include <poppack.h>
+#endif
+
 #endif /* __WINE_D3D9TYPES_H */