- fixed compilation with XCode and silenced several warnings

src/sound/backend/i_sound.cpp

@@ -321,7 +321,7 @@ void I_ShutdownSound()
 	}
 }
 
-const char *GetSampleTypeName(enum SampleType type)
+const char *GetSampleTypeName(SampleType type)
 {
     switch(type)
     {
@@ -331,7 +331,7 @@ const char *GetSampleTypeName(enum SampleType type)
     return "(invalid sample type)";
 }
 
-const char *GetChannelConfigName(enum ChannelConfig chan)
+const char *GetChannelConfigName(ChannelConfig chan)
 {
     switch(chan)
     {

src/sound/backend/i_soundinternal.h

@@ -6,6 +6,7 @@
 #include "doomtype.h"
 #include "vectors.h"
 #include "tarray.h"
+#include "zmusic/sounddecoder.h"
 #include "../../libraries/music_common/fileio.h"
 
 class FileReader;
@@ -116,9 +117,6 @@ struct FISoundChannel
 
 void FindLoopTags(MusicIO::FileInterface *fr, uint32_t *start, bool *startass, uint32_t *end, bool *endass);
 
-
-const char *GetSampleTypeName(enum SampleType type);
-const char *GetChannelConfigName(enum ChannelConfig chan);
 class SoundStream;
 
 

src/sound/backend/oalsound.cpp

@@ -47,6 +47,9 @@
 #include "zmusic/sounddecoder.h"
 #include "filereadermusicinterface.h"
 
+const char *GetSampleTypeName(SampleType type);
+const char *GetChannelConfigName(ChannelConfig chan);
+
 FModule OpenALModule{"OpenAL"};
 
 #include "oalload.h"