server/shadow: resuscitate shadow server

shadow_client_refresh_rect returned FALSE if the areas parameter
was NULL. It may only do so if the count parameter is > 0.

diff --git a/server/shadow/shadow_client.c b/server/shadow/shadow_client.c
index dc8f749..95a5127 100644 (file)
--- a/server/shadow/shadow_client.c
+++ b/server/shadow/shadow_client.c
@@ -257,7 +257,7 @@ BOOL shadow_client_refresh_rect(rdpShadowClient* client, BYTE count, RECTANGLE_1
        SHADOW_MSG_IN_REFRESH_OUTPUT* wParam;
        wMessagePipe* MsgPipe = client->subsystem->MsgPipe;
 
-       if (!areas)
+       if (count && !areas)
                return FALSE;
 
        if (!(wParam = (SHADOW_MSG_IN_REFRESH_OUTPUT*) calloc(1, sizeof(SHADOW_MSG_IN_REFRESH_OUTPUT))))