[PATCH 5/5] strmbase: Check if the pin is already connected in source_Connect().

[Zebediah Figura]

Signed-off-by: Zebediah Figura 
---
 dlls/strmbase/pin.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/strmbase/pin.c b/dlls/strmbase/pin.c
index 90064c25d4d..18631410b77 100644
--- a/dlls/strmbase/pin.c
+++ b/dlls/strmbase/pin.c
@@ -463,6 +463,13 @@ static HRESULT WINAPI source_Connect(IPin *iface, IPin *peer, const AM_MEDIA_TYP

EnterCriticalSection(&pin->pin.filter->csFilter);

+    if (pin->pin.peer)
+    {
+        LeaveCriticalSection(&pin->pin.filter->csFilter);
+        WARN("Pin is already connected, returning VFW_E_ALREADY_CONNECTED.\n");
+        return VFW_E_ALREADY_CONNECTED;
+    }
+
     if (pin->pin.filter->state != State_Stopped)
     {
         LeaveCriticalSection(&pin->pin.filter->csFilter);