[PATCH 1/3] ntdll: Check return parameter before use

[Alistair Leslie-Hughes]

From: Alistair Leslie-Hughes

---
 dlls/ntdll/sec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/ntdll/sec.c b/dlls/ntdll/sec.c
index ba11000564e..ba8d7b71593 100644
--- a/dlls/ntdll/sec.c
+++ b/dlls/ntdll/sec.c
@@ -1172,6 +1172,8 @@ NTSTATUS WINAPI RtlAddAce(
    	return STATUS_INVALID_PARAMETER;
    if (!RtlFirstFreeAce(acl,&targetace))
    	return STATUS_INVALID_PARAMETER;
+	if (!targetace)
+		return STATUS_ALLOTTED_SPACE_EXCEEDED;
    nrofaces=0;ace=acestart;
    while (((BYTE *)ace - (BYTE *)acestart) < acelen) {
    	nrofaces++;