ntdll/tests: Skip some tests if not allowed to modify image file execution options.

[Francois Gouget]

---

On Windows 7, if not running the tests with elevated privileges some    
registry keys/values cannot be modified. This fixes the test on my
Windows 7 VM.

 dlls/ntdll/tests/reg.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/dlls/ntdll/tests/reg.c b/dlls/ntdll/tests/reg.c
index 8f44a1d..5ca14eb 100644
--- a/dlls/ntdll/tests/reg.c
+++ b/dlls/ntdll/tests/reg.c
@@ -1198,6 +1198,11 @@ static void test_redirection(void)
 
     pRtlInitUnicodeString( &str, classes64W );
     status = pNtCreateKey( &key64, KEY_WOW64_64KEY | KEY_ALL_ACCESS, &attr, 0, 0, 0, 0 );
+    if (status == STATUS_ACCESS_DENIED)
+    {
+        skip("Not authorized to modify the Classes key\n");
+        return;
+    }
     ok( status == STATUS_SUCCESS, "NtCreateKey failed: 0x%08x\n", status );
 
     pRtlInitUnicodeString( &str, classes32W );
-- 
1.7.5.4