Use a separate EffectStateFactory for standard reverb

Alc/effects/reverb.cpp

@@ -1477,6 +1477,9 @@ EffectStateFactory *ReverbStateFactory_getFactory()
     return &ReverbFactory;
 }
 
+EffectStateFactory *StdReverbStateFactory_getFactory()
+{ return ReverbStateFactory_getFactory(); }
+
 
 void ALeaxreverb_setParami(ALeffect *effect, ALCcontext *context, ALenum param, ALint val)
 {

OpenAL32/Include/alAuxEffectSlot.h

@@ -126,6 +126,7 @@ void UpdateAllEffectSlotProps(ALCcontext *context);
 
 EffectStateFactory *NullStateFactory_getFactory(void);
 EffectStateFactory *ReverbStateFactory_getFactory(void);
+EffectStateFactory *StdReverbStateFactory_getFactory(void);
 EffectStateFactory *AutowahStateFactory_getFactory(void);
 EffectStateFactory *ChorusStateFactory_getFactory(void);
 EffectStateFactory *CompressorStateFactory_getFactory(void);

OpenAL32/alAuxEffectSlot.cpp

@@ -156,7 +156,7 @@ constexpr struct FactoryItem {
 } FactoryList[] = {
     { AL_EFFECT_NULL, NullStateFactory_getFactory },
     { AL_EFFECT_EAXREVERB, ReverbStateFactory_getFactory },
-    { AL_EFFECT_REVERB, ReverbStateFactory_getFactory },
+    { AL_EFFECT_REVERB, StdReverbStateFactory_getFactory },
     { AL_EFFECT_AUTOWAH, AutowahStateFactory_getFactory },
     { AL_EFFECT_CHORUS, ChorusStateFactory_getFactory },
     { AL_EFFECT_COMPRESSOR, CompressorStateFactory_getFactory },