shell32/tests: Use a different name for the return value.

[wine] / dlls / xinput1_3 / xinput1_3.spec

@ stdcall XInputEnable(long)
@ stdcall XInputSetState(long ptr)
@ stdcall XInputGetState(long ptr)
@ stdcall XInputGetKeystroke(long long ptr)
@ stdcall XInputGetCapabilities(long long ptr)
@ stub XInputGetDSoundAudioDeviceGuids #(long ptr ptr)
@ stub XInputGetBatteryInformation