Don't leak device moniker when BindToStorage fails.

Bug: b/143372501
Change-Id: Ib60efc830de057c7edafa81b77b696b785fb78e7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/159661
Reviewed-by: Tommi <tommi@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29774}

modules/video_capture/windows/device_info_ds.cc

@@ -274,8 +274,8 @@ IBaseFilter* DeviceInfoDS::GetDeviceFilter(const char* deviceUniqueIdUTF8,
       }
       VariantClear(&varName);
       pBag->Release();
-      pM->Release();
     }
+    pM->Release();
   }
   return captureFilter;
 }