Alex Henrie : ole32: Fix memory leak on error path in CompositeMonikerImpl_CommonPrefixWith (Coverity).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e6869fe920025c184ecf497573c61f13d7c1c6e8
URL:    https://gitlab.winehq.org/wine/wine/-/commit/e6869fe920025c184ecf497573c61f1...

Author: Alex Henrie 
Date:   Tue Nov 15 20:35:09 2022 -0700

ole32: Fix memory leak on error path in CompositeMonikerImpl_CommonPrefixWith (Coverity).

---

dlls/ole32/compositemoniker.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dlls/ole32/compositemoniker.c b/dlls/ole32/compositemoniker.c
index 40f77459ef8..26c950a072e 100644
--- a/dlls/ole32/compositemoniker.c
+++ b/dlls/ole32/compositemoniker.c
@@ -751,7 +751,11 @@ static HRESULT WINAPI CompositeMonikerImpl_CommonPrefixWith(IMoniker *iface, IMo
         heap_free(components);
         heap_free(other_components);

-        if (!prefix_len) return MK_E_NOPREFIX;
+        if (!prefix_len)
+        {
+            heap_free(prefix_components);
+            return MK_E_NOPREFIX;
+        }

last = prefix_components[0];
         for (i = 1; i < prefix_len; ++i)