Alexandre Julliard : dpnet: Fix short buffer check also for the A case.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b95cc688944fc9eacf5bd3a0ef30e78c2d0188b5
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b95cc688944fc9eacf5bd3a0ef30e78c2d0188b5

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Thu Aug 26 12:46:18 2021 +0200

dpnet: Fix short buffer check also for the A case.

Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/dpnet/address.c       | 3 ---
 dlls/dpnet/tests/address.c | 3 ++-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/dlls/dpnet/address.c b/dlls/dpnet/address.c
index 7216576dbf1..d7e802f8106 100644
--- a/dlls/dpnet/address.c
+++ b/dlls/dpnet/address.c
@@ -326,10 +326,7 @@ static HRESULT WINAPI IDirectPlay8AddressImpl_GetURLA(IDirectPlay8Address *iface
         return DPNERR_INVALIDPOINTER;
 
     if(url && *length)
-    {
-        url[0] = '\0';
         buffer = heap_alloc(*length * sizeof(WCHAR));
-    }
 
     hr = IDirectPlay8Address_GetURLW(iface, buffer, length);
     if(hr == DPN_OK)
diff --git a/dlls/dpnet/tests/address.c b/dlls/dpnet/tests/address.c
index b3ab80f2b3c..fe17cfde52d 100644
--- a/dlls/dpnet/tests/address.c
+++ b/dlls/dpnet/tests/address.c
@@ -400,9 +400,10 @@ static void address_urlA(void)
         ok(hr == DPNERR_BUFFERTOOSMALL, "got 0x%08x\n", hr);
 
         bufflen2 = bufflen/2;
+        memset( buffer, 0x55, sizeof(buffer) );
         hr = IDirectPlay8Address_GetURLA(localaddr, buffer, &bufflen2);
         ok(hr == DPNERR_BUFFERTOOSMALL, "got 0x%08x\n", hr);
-        ok(!strlen(buffer), "wrong length\n");
+        ok(buffer[0] == 0x55, "buffer modified\n");
 
         hr = IDirectPlay8Address_GetURLA(localaddr, buffer, &bufflen);
         ok(hr == S_OK, "got 0x%08x\n", hr);