Zebediah Figura : httpapi: Allow passing NULL size to HttpReceiveHttpRequest().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d1d37e40d2cd2e7eb181db733ac8a2141cae4d99
URL:    https://gitlab.winehq.org/wine/wine/-/commit/d1d37e40d2cd2e7eb181db733ac8a21...

Author: Zebediah Figura <zfigura(a)codeweavers.com>
Date:   Tue Dec 20 00:57:18 2022 -0600

httpapi: Allow passing NULL size to HttpReceiveHttpRequest().

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53980

---

 dlls/httpapi/httpapi_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dlls/httpapi/httpapi_main.c b/dlls/httpapi/httpapi_main.c
index 964589021d6..cd00608c1ca 100644
--- a/dlls/httpapi/httpapi_main.c
+++ b/dlls/httpapi/httpapi_main.c
@@ -323,6 +323,7 @@ ULONG WINAPI HttpReceiveHttpRequest(HANDLE queue, HTTP_REQUEST_ID id, ULONG flag
         .bits = sizeof(void *) * 8,
     };
     ULONG ret = ERROR_SUCCESS;
+    ULONG local_ret_size;
     OVERLAPPED sync_ovl;
 
     TRACE("queue %p, id %s, flags %#lx, request %p, size %#lx, ret_size %p, ovl %p.\n",
@@ -340,6 +341,9 @@ ULONG WINAPI HttpReceiveHttpRequest(HANDLE queue, HTTP_REQUEST_ID id, ULONG flag
         ovl = &sync_ovl;
     }
 
+    if (!ret_size)
+        ret_size = &local_ret_size;
+
     if (!DeviceIoControl(queue, IOCTL_HTTP_RECEIVE_REQUEST, ¶ms, sizeof(params), request, size, ret_size, ovl))
         ret = GetLastError();