Michael Stefaniuc : dmusic: Always AddRef the returned iface in QueryInterface.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d3c550d0ba36e8ed7c2c9c8741d59b7df01b96c2
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=d3c550d0ba36e8ed7c2c9c8741d59b7df01b96c2

Author: Michael Stefaniuc <mstefani at redhat.de>
Date:   Sun Jan  5 23:38:33 2014 +0100

dmusic: Always AddRef the returned iface in QueryInterface.

---

 dlls/dmusic/collection.c |   27 +++++++++------------------
 1 files changed, 9 insertions(+), 18 deletions(-)

diff --git a/dlls/dmusic/collection.c b/dlls/dmusic/collection.c
index f98bc19..a673390 100644
--- a/dlls/dmusic/collection.c
+++ b/dlls/dmusic/collection.c
@@ -48,31 +48,22 @@ static HRESULT WINAPI IDirectMusicCollectionImpl_IDirectMusicCollection_QueryInt
 
     TRACE("(%p/%p)->(%s, %p)\n", iface, This, debugstr_dmguid(riid), ret_iface);
 
-    if (IsEqualIID(riid, &IID_IUnknown) ||
-        IsEqualIID(riid, &IID_IDirectMusicCollection))
-    {
+    *ret_iface = NULL;
+
+    if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDirectMusicCollection))
         *ret_iface = iface;
-        IDirectMusicCollection_AddRef(iface);
-        return S_OK;
-    }
     else if (IsEqualIID(riid, &IID_IDirectMusicObject))
-    {
         *ret_iface = &This->IDirectMusicObject_iface;
-        IDirectMusicCollection_AddRef(iface);
-        return S_OK;
-    }
     else if (IsEqualIID(riid, &IID_IPersistStream))
-    {
         *ret_iface = &This->IPersistStream_iface;
-        IDirectMusicCollection_AddRef(iface);
-        return S_OK;
+    else
+    {
+        WARN("(%p/%p)->(%s, %p): not found\n", iface, This, debugstr_dmguid(riid), ret_iface);
+        return E_NOINTERFACE;
     }
 
-    *ret_iface = NULL;
-
-    WARN("(%p/%p)->(%s, %p): not found\n", iface, This, debugstr_dmguid(riid), ret_iface);
-
-    return E_NOINTERFACE;
+    IUnknown_AddRef((IUnknown*)*ret_iface);
+    return S_OK;
 }
 
 static ULONG WINAPI IDirectMusicCollectionImpl_IDirectMusicCollection_AddRef(LPDIRECTMUSICCOLLECTION iface)