[PATCH v2 2/2] nsiproxy: Only set the connection count from udp_endpoint_enumerate_all when appropriate.

[Tim Clem]

From: Tim Clem

Fixes heap corruption downstream in NsiEnumerateObjectsAllParametersEx.

Fixes a regression from a3f737f6143.
---
 dlls/nsiproxy.sys/udp.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/dlls/nsiproxy.sys/udp.c b/dlls/nsiproxy.sys/udp.c
index 1d790484d8f..13d2e631b08 100644
--- a/dlls/nsiproxy.sys/udp.c
+++ b/dlls/nsiproxy.sys/udp.c
@@ -231,8 +231,14 @@ static NTSTATUS udp_endpoint_enumerate_all( void *key_data, UINT key_size, void
             *count = reply->count;
         else if (ret == STATUS_BUFFER_TOO_SMALL)
         {
-            *count = reply->count;
-            if (want_data)
+            if (!want_data)
+            {
+                /* If we were given buffers, the outgoing count must never be
+                   greater than the incoming one. If we weren't, the count
+                   should be set to the actual count. */
+                *count = reply->count;
+            }
+            else
             {
                 free( endpoints );
                 return STATUS_BUFFER_OVERFLOW;