[PATCH 0/2] MR2130: Fix missing *out=NULL in (WMReader|unknown_inner)_QueryInterface

[Ivan Chikish (＠nekotekina)]

QueryInterface should set *out to NULL on failure, as it seems to do in many different places.

This seems to be a regression from !888.
One old game started to crash on startup with this merge request.
I bisected it and it pointed to the commit 131ada052a2dbec66df695ce536ca048a2bd9174.

[PATCH 1/2] winegstreamer: add missing *out=NULL in unknown_inner_QueryInterface

[Ivan Chikish]

From: Ivan Chikish

QueryInterface should set *out to NULL on failure.
Also change the log level on failure to FIXME.
---
 dlls/winegstreamer/wm_reader.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/winegstreamer/wm_reader.c b/dlls/winegstreamer/wm_reader.c
index 18b0e8a90bc..50e2c5fc175 100644
--- a/dlls/winegstreamer/wm_reader.c
+++ b/dlls/winegstreamer/wm_reader.c
@@ -1700,7 +1700,8 @@ static HRESULT WINAPI unknown_inner_QueryInterface(IUnknown *iface, REFIID iid,
         *out = &reader->IWMReaderTimecode_iface;
     else
     {
-        WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
+        FIXME("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
+        *out = NULL;
         return E_NOINTERFACE;
     }

[PATCH 2/2] wmvcore: add missing *out=NULL in WMReader_QueryInterface

[Ivan Chikish]

From: Ivan Chikish

QueryInterface should set *out to NULL on failure.
Also change the log level on failure to FIXME.
---
 dlls/wmvcore/async_reader.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/wmvcore/async_reader.c b/dlls/wmvcore/async_reader.c
index a51018260b1..47de592c95c 100644
--- a/dlls/wmvcore/async_reader.c
+++ b/dlls/wmvcore/async_reader.c
@@ -544,7 +544,8 @@ static HRESULT WINAPI WMReader_QueryInterface(IWMReader *iface, REFIID iid, void
         *out = &reader->IReferenceClock_iface;
     else
     {
-        WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
+        FIXME("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
+        *out = NULL;
         return E_NOINTERFACE;
     }

[Zebediah Figura (＠zfigura)]

Can you please tests for this to dlls/wmvcore/tests/test?