Fix NtQueryPerformanceCounter parameter checking. Spotted by Alex

Woods.
2005-02-21 18:27:58 +00:00 · 2005-02-21 18:27:58 +00:00 · 9ebbd3e514
parent 4390d003f4
commit 9ebbd3e514
1 changed files with 4 additions and 1 deletions
--- a/dlls/ntdll/nt.c
+++ b/dlls/ntdll/nt.c
@ -520,9 +520,12 @@ NTSTATUS WINAPI NtQueryPerformanceCounter(
 	OUT PLARGE_INTEGER Frequency)
 {
    LARGE_INTEGER time;
+
+    if (!Counter) return STATUS_ACCESS_VIOLATION;
    NtQuerySystemTime( &time );
    Counter->QuadPart = time.QuadPart;
-    Frequency->QuadPart = 10000000;
+    if (Frequency)
+        Frequency->QuadPart = 10000000;
    return 0;
 }