[PATCH] amstream: use correct buffersize for StringFromGUID2

[Marcus Meissner]

(we have a 40 character array, but stuff an I in already,
so have 39 characters left at this point)

Signed-off-by: Marcus Meissner 
---
 dlls/amstream/tests/amstream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/amstream/tests/amstream.c b/dlls/amstream/tests/amstream.c
index 70cd18de1b..1a14572c8a 100644
--- a/dlls/amstream/tests/amstream.c
+++ b/dlls/amstream/tests/amstream.c
@@ -468,7 +468,7 @@ static void test_media_streams(void)

/* Pin name is "I{guid MSPID_PrimaryVideo or MSPID_PrimaryAudio}" */
                 id[0] = 'I';
-                StringFromGUID2(i ? &MSPID_PrimaryAudio : &MSPID_PrimaryVideo, id + 1, 40);
+                StringFromGUID2(i ? &MSPID_PrimaryAudio : &MSPID_PrimaryVideo, id + 1, 39);

hr = IPin_ConnectedTo(pins[i], &pin);
                 ok(hr == VFW_E_NOT_CONNECTED, "IPin_ConnectedTo returned: %x\n", hr);