[PATCH v2 2/3] msvcp90: Call Release instead of AddRef for WinRT exceptions in copy_exception helper.

[Vibhav Pant]

From: Vibhav Pant

---
 dlls/msvcp90/exception.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/dlls/msvcp90/exception.c b/dlls/msvcp90/exception.c
index aef1268068c..df2f52c0755 100644
--- a/dlls/msvcp90/exception.c
+++ b/dlls/msvcp90/exception.c
@@ -43,7 +43,7 @@ CREATE_TYPE_INFO_VTABLE

#define CLASS_IS_SIMPLE_TYPE          1
 #define CLASS_HAS_VIRTUAL_BASE_CLASS  4
-#define CLASS_IS_IUNKNOWN             8
+#define CLASS_IS_WINRT                8

int* __cdecl __processing_throw(void);

@@ -1200,8 +1200,10 @@ static inline void copy_exception( void *object, void **dest, UINT catch_flags,
 {
     if (type->flags & CLASS_IS_SIMPLE_TYPE)
     {
-        if (type->flags & CLASS_IS_IUNKNOWN && *(IUnknown**)object)
-            IUnknown_AddRef(*(IUnknown**)object);
+        /* WinRT exceptions are thrown with a reference count of 2, the refcount is decreased before it's handed off to a
+         * matching catch block. */
+        if (type->flags & CLASS_IS_WINRT && *(IUnknown**)object)
+            IUnknown_Release(*(IUnknown**)object);
         memmove( dest, object, type->size );
         /* if it is a pointer, adjust it */
         if (type->size == sizeof(void*)) *dest = get_this_pointer( &type->offsets, *dest );
@@ -1216,8 +1218,8 @@ static inline void copy_exception( void *object, void **dest, UINT catch_flags,
         }
         else
         {
-            if (type->flags & CLASS_IS_IUNKNOWN && *(IUnknown**)object)
-                IUnknown_AddRef(*(IUnknown**)object);
+            if (type->flags & CLASS_IS_WINRT && *(IUnknown**)object)
+                IUnknown_Release(*(IUnknown**)object);
             memmove( dest, get_this_pointer( &type->offsets, object ), type->size );
         }
     }