[PATCH 3/4] ntdll: Clear ret->Buffer on failure in get_env_var() (Valgrind).

[Henri Verbeet]

Signed-off-by: Henri Verbeet 
---
 dlls/ntdll/loader.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c
index 38dd276608b..e71564d065b 100644
--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -2604,7 +2604,11 @@ static NTSTATUS get_env_var( const WCHAR *name, SIZE_T extra, UNICODE_STRING *re
             return status;
         }
         RtlFreeHeap( GetProcessHeap(), 0, ret->Buffer );
-        if (status != STATUS_BUFFER_TOO_SMALL) return status;
+        if (status != STATUS_BUFFER_TOO_SMALL)
+        {
+            ret->Buffer = NULL;
+            return status;
+        }
         size = len + 1 + extra;
     }
 }