[HL] Scientist don't make remarks on bad smells

[Maxi605]

As Guards, Scientist were supposed to make a remark when there's something dead near them, but this seems to be broken.

https://youtu.be/1tvz0WVaQGg?t=62

[SamVanheer]

This is because the Scientist's sound mask doesn't include carcasses, meat and garbage:

halflife/dlls/scientist.cpp

Lines 772 to 783 in c7240b9

	//=========================================================
	// ISoundMask - returns a bit mask indicating which types
	// of sounds this monster regards. In the base class implementation,
	// monsters care about all sounds, but no scents.
	//=========================================================
	int CScientist :: ISoundMask ( void )
	{
	return bits_SOUND_WORLD |
	bits_SOUND_COMBAT |
	bits_SOUND_DANGER |
	bits_SOUND_PLAYER;
	}

Barney's sound mask handles these cases correctly:

halflife/dlls/barney.cpp

Lines 243 to 256 in c7240b9

	//=========================================================
	// ISoundMask - returns a bit mask indicating which types
	// of sounds this monster regards.
	//=========================================================
	int CBarney :: ISoundMask ( void)
	{
	return bits_SOUND_WORLD |
	bits_SOUND_COMBAT |
	bits_SOUND_CARCASS |
	bits_SOUND_MEAT |
	bits_SOUND_GARBAGE |
	bits_SOUND_DANGER |
	bits_SOUND_PLAYER;
	}

Using the same one should fix it.

Thanks to NongBenz for letting me know about this.