Fix build of static library

- Add missing pcm_empty entry
- Return the array pointer instead of the first array member.
  Otherwise only the first entry is linked to the binary.

src/control/control_symbols.c

@@ -30,7 +30,7 @@ static const char **snd_control_open_objects[] = {
 	
 void *snd_control_open_symbols(void)
 {
-	return (void *)snd_control_open_objects[0];
+	return snd_control_open_objects;
 }
 
 #endif /* !PIC */

src/hwdep/hwdep_symbols.c

@@ -28,7 +28,7 @@ static const char **snd_hwdep_open_objects[] = {
 	
 void *snd_hwdep_open_symbols(void)
 {
-	return (void *)snd_hwdep_open_objects[0];
+	return snd_hwdep_open_objects;
 }
 
 #endif

src/pcm/pcm_symbols.c

@@ -33,6 +33,7 @@ extern const char *_snd_module_pcm_meter;
 extern const char *_snd_module_pcm_mulaw;
 extern const char *_snd_module_pcm_multi;
 extern const char *_snd_module_pcm_null;
+extern const char *_snd_module_pcm_empty;
 extern const char *_snd_module_pcm_plug;
 extern const char *_snd_module_pcm_rate;
 extern const char *_snd_module_pcm_route;
@@ -56,7 +57,7 @@ static const char **snd_pcm_open_objects[] = {
 	
 void *snd_pcm_open_symbols(void)
 {
-	return (void *)snd_pcm_open_objects[0];
+	return snd_pcm_open_objects;
 }
 
 #endif /* !PIC */

src/rawmidi/rawmidi_symbols.c

@@ -30,7 +30,7 @@ static const char **snd_rawmidi_open_objects[] = {
 	
 void *snd_rawmidi_open_symbols(void)
 {
-	return (void *)snd_rawmidi_open_objects[0];
+	return snd_rawmidi_open_objects;
 }
 
 #endif /* !PIC */

src/seq/seq_symbols.c

@@ -28,7 +28,7 @@ static const char **snd_seq_open_objects[] = {
 	
 void *snd_seq_open_symbols(void)
 {
-	return (void *)snd_seq_open_objects[0];
+	return snd_seq_open_objects;
 }
 
 #endif /* !PIC */

src/timer/timer_symbols.c

@@ -40,7 +40,7 @@ static const char **snd_timer_query_open_objects[] = {
 	
 void *snd_timer_query_open_symbols(void)
 {
-	return (void *)snd_timer_query_open_objects[0];
+	return snd_timer_query_open_objects;
 }
 
 #endif /* !PIC */