Quiet two noisy FIXME's.

dlls/gdi32/driver.c

@@ -750,6 +750,9 @@ INT WINAPI NamedEscape( HDC hdc, LPCWSTR pDriver, INT nEscape, INT cbInput, LPCS
  */
 ULONG WINAPI DdQueryDisplaySettingsUniqueness(VOID)
 {
+    static int warn_once;
+
+    if (!warn_once++)
         FIXME("stub\n");
     return 0;
 }

dlls/ntdll/rtl.c

@@ -444,6 +444,9 @@ PVOID WINAPI RtlInitializeGenericTable(PVOID pTable, PVOID arg2, PVOID arg3, PVO
  */
 PVOID RtlEnumerateGenericTableWithoutSplaying(PVOID pTable, PVOID *RestartKey)
 {
+    static int warn_once;
+
+    if (!warn_once++)
         FIXME("(%p,%p) stub!\n", pTable, RestartKey);
     return NULL;
 }