xaudio2_7: Make some functions static.

[Francois Gouget]

---
 dlls/xaudio2_7/xaudio_dll.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/dlls/xaudio2_7/xaudio_dll.c b/dlls/xaudio2_7/xaudio_dll.c
index e271235..e9e6acd 100644
--- a/dlls/xaudio2_7/xaudio_dll.c
+++ b/dlls/xaudio2_7/xaudio_dll.c
@@ -144,12 +144,12 @@ typedef struct _XA2SourceImpl {
     struct list entry;
 } XA2SourceImpl;
 
-XA2SourceImpl *impl_from_IXAudio2SourceVoice(IXAudio2SourceVoice *iface)
+static XA2SourceImpl *impl_from_IXAudio2SourceVoice(IXAudio2SourceVoice *iface)
 {
     return CONTAINING_RECORD(iface, XA2SourceImpl, IXAudio2SourceVoice_iface);
 }
 
-XA2SourceImpl *impl_from_IXAudio27SourceVoice(IXAudio27SourceVoice *iface)
+static XA2SourceImpl *impl_from_IXAudio27SourceVoice(IXAudio27SourceVoice *iface)
 {
     return CONTAINING_RECORD(iface, XA2SourceImpl, IXAudio27SourceVoice_iface);
 }
@@ -164,7 +164,7 @@ typedef struct _XA2SubmixImpl {
     struct list entry;
 } XA2SubmixImpl;
 
-XA2SubmixImpl *impl_from_IXAudio2SubmixVoice(IXAudio2SubmixVoice *iface)
+static XA2SubmixImpl *impl_from_IXAudio2SubmixVoice(IXAudio2SubmixVoice *iface)
 {
     return CONTAINING_RECORD(iface, XA2SubmixImpl, IXAudio2SubmixVoice_iface);
 }
@@ -210,7 +210,7 @@ static inline IXAudio2Impl *impl_from_IXAudio27(IXAudio27 *iface)
     return CONTAINING_RECORD(iface, IXAudio2Impl, IXAudio27_iface);
 }
 
-IXAudio2Impl *impl_from_IXAudio2MasteringVoice(IXAudio2MasteringVoice *iface)
+static IXAudio2Impl *impl_from_IXAudio2MasteringVoice(IXAudio2MasteringVoice *iface)
 {
     return CONTAINING_RECORD(iface, IXAudio2Impl, IXAudio2MasteringVoice_iface);
 }
-- 
2.5.0