spoolss/tests: change skip() to winskip()

[Austin English]

Also update a comment.

-- 
-Austin
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diff --git a/dlls/spoolss/tests/spoolss.c b/dlls/spoolss/tests/spoolss.c
index b7d71d6..acf2801 100644
--- a/dlls/spoolss/tests/spoolss.c
+++ b/dlls/spoolss/tests/spoolss.c
@@ -208,10 +208,10 @@ START_TEST(spoolss)
 {
     LPCSTR ptr;
 
-    /* spoolss.dll does not exist on win9x */
+    /* The tests fail on Win7 (see comments in load_function() */
     ptr = load_functions();
     if (ptr) {
-        skip("%s not found\n", ptr);
+        win_skip("%s not found\n", ptr);
         return;
     }