[PATCH 2/2] setupapi: Avoid reading past the end of a buffer (Valgrind).

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/setupapi/devinst.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/setupapi/devinst.c b/dlls/setupapi/devinst.c
index ef7b4dccf0d..6c4a6e68b4d 100644
--- a/dlls/setupapi/devinst.c
+++ b/dlls/setupapi/devinst.c
@@ -4610,7 +4610,8 @@ static BOOL device_matches_id(const struct device *device, const WCHAR *id_type,
         device_ids = heap_alloc(size);
         if (!RegGetValueW(device->key, NULL, id_type, RRF_RT_REG_MULTI_SZ, NULL, device_ids, &size))
         {
-            for (p = device_ids, i = 0; *p; p += lstrlenW(p) + 1, i++)
+            char *end = (char *)device_ids + size;
+            for (p = device_ids, i = 0; (char *)p + sizeof(WCHAR) <= end && *p; p += lstrlenW(p) + 1, i++)
             {
                 if (!wcsicmp(p, id))
                 {