Fix linking with static OpenAL under windows

nel/src/sound/driver/openal/ext_al.cpp

@@ -66,6 +66,7 @@ void alExtInitDevice(ALCdevice *device)
 		}
 	}
 
+#if !defined(AL_LIBTYPE_STATIC)
 // Windows and Mac OS always link to shared OpenAL library
 #if defined(NL_OS_WINDOWS) || defined(NL_OS_MAC) || !defined(NL_STATIC)
 	// EFX
@@ -114,6 +115,7 @@ void alExtInitDevice(ALCdevice *device)
 		}
 	}
 #endif
+#endif
 }
 
 #if EAX_AVAILABLE
@@ -137,6 +139,7 @@ EAXGetBufferMode eaxGetBufferMode = NULL;
 // ALC_EXT_EFX
 bool AlExtEfx = false;
 // effect objects
+#if !defined(AL_LIBTYPE_STATIC)
 #if defined(NL_OS_WINDOWS) || defined(NL_OS_MAC) || !defined(NL_STATIC)
 LPALGENEFXOBJECTS alGenEffects = NULL;
 LPALDELETEEFXOBJECTS alDeleteEffects = NULL;
@@ -174,6 +177,7 @@ LPALGETEFXOBJECTIV alGetAuxiliaryEffectSlotiv = NULL;
 LPALGETEFXOBJECTF alGetAuxiliaryEffectSlotf = NULL;
 LPALGETEFXOBJECTFV alGetAuxiliaryEffectSlotfv = NULL;
 #endif
+#endif
 }
 
 /* end of file */