dmsynth: Activate reverb and chorus according to effect flags.

dlls/dmsynth/synth.c

@@ -565,6 +565,10 @@ static HRESULT WINAPI synth_Open(IDirectMusicSynth8 *iface, DMUS_PORTPARAMS *par
     }
 
     fluid_settings_setnum(This->fluid_settings, "synth.sample-rate", actual.dwSampleRate);
+    fluid_settings_setint(This->fluid_settings, "synth.reverb.active",
+            !!(actual.dwEffectFlags & DMUS_EFFECT_REVERB));
+    fluid_settings_setint(This->fluid_settings, "synth.chorus.active",
+            !!(actual.dwEffectFlags & DMUS_EFFECT_CHORUS));
     if (!(This->fluid_synth = new_fluid_synth(This->fluid_settings))) return E_OUTOFMEMORY;
     if ((id = fluid_synth_add_sfont(This->fluid_synth, This->fluid_sfont)) == FLUID_FAILED)
         WARN("Failed to add fluid_sfont to fluid_synth\n");