include: Use hexadecimal constants for XAudio flags.

include/xaudio2.idl

@@ -1226,15 +1226,15 @@ interface IXAudio2 : IUnknown
         [in, defaultvalue(NULL)] void* pReserved);
 }
 
-const UINT32 XAUDIO2_DEBUG_ENGINE = 1;
-const UINT32 XAUDIO2_VOICE_NOPITCH = 2;
-const UINT32 XAUDIO2_VOICE_NOSRC = 4;
-const UINT32 XAUDIO2_VOICE_USEFILTER = 8;
-const UINT32 XAUDIO2_VOICE_MUSIC = 16;
-const UINT32 XAUDIO2_PLAY_TAILS = 32;
-const UINT32 XAUDIO2_END_OF_STREAM = 64;
-const UINT32 XAUDIO2_SEND_USEFILTER = 128;
-const UINT32 XAUDIO2_VOICE_NOSAMPLESPLAYED = 256;
+const UINT32 XAUDIO2_DEBUG_ENGINE           = 0x00000001;
+const UINT32 XAUDIO2_VOICE_NOPITCH          = 0x00000002;
+const UINT32 XAUDIO2_VOICE_NOSRC            = 0x00000004;
+const UINT32 XAUDIO2_VOICE_USEFILTER        = 0x00000008;
+const UINT32 XAUDIO2_VOICE_MUSIC            = 0x00000010;
+const UINT32 XAUDIO2_PLAY_TAILS             = 0x00000020;
+const UINT32 XAUDIO2_END_OF_STREAM          = 0x00000040;
+const UINT32 XAUDIO2_SEND_USEFILTER         = 0x00000080;
+const UINT32 XAUDIO2_VOICE_NOSAMPLESPLAYED  = 0x00000100;
 
 const XAUDIO2_FILTER_TYPE XAUDIO2_DEFAULT_FILTER_TYPE = LowPassFilter;
 const float XAUDIO2_DEFAULT_FILTER_FREQUENCY = XAUDIO2_MAX_FILTER_FREQUENCY;