include: Fix packing of the setupapi structures.

dlls/setupapi/tests/devinst.c

@@ -833,12 +833,6 @@ static void testGetDeviceInterfaceDetail(void)
              "Expected ERROR_INVALID_USER_BUFFER, got %08x\n", GetLastError());
             detail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A);
             SetLastError(0xdeadbeef);
-            ret = pSetupDiGetDeviceInterfaceDetailA(set, &interfaceData, detail,
-                    size, &size, NULL);
-            ok(!ret && GetLastError() == ERROR_INVALID_USER_BUFFER,
-             "Expected ERROR_INVALID_USER_BUFFER, got %08x\n", GetLastError());
-            /* Windows 2000 and up check for the exact size */
-            detail->cbSize = FIELD_OFFSET(SP_DEVICE_INTERFACE_DETAIL_DATA_A, DevicePath[1]);
             ret = pSetupDiGetDeviceInterfaceDetailA(set, &interfaceData, detail,
                     size, &size, NULL);
             ok(ret, "SetupDiGetDeviceInterfaceDetailA failed: %d\n",

include/setupapi.h

@@ -22,8 +22,10 @@
 
 #include <commctrl.h>
 
-#ifdef __cplusplus
-extern "C" {
+#ifdef _WIN64
+#include <pshpack8.h>
+#else
+#include <pshpack1.h>
 #endif
 
 /* setupapi doesn't use the normal convention, it adds an underscore before A/W */
@@ -1848,8 +1850,6 @@ BOOL     WINAPI UnmapAndCloseFile(HANDLE, HANDLE, PVOID);
 
 #undef DECL_WINELIB_SETUPAPI_TYPE_AW
 
-#ifdef __cplusplus
-}
-#endif
+#include <poppack.h>
 
 #endif /* _INC_SETUPAPI */