mscms: Set the last error code to an unusual value.
diff --git a/dlls/mscms/tests/profile.c b/dlls/mscms/tests/profile.c
index 8fd572c..830d6fb 100644
--- a/dlls/mscms/tests/profile.c
+++ b/dlls/mscms/tests/profile.c
@@ -495,7 +495,7 @@
 #define fail_GSCSPA(pMachName, dwProfID, pProfName, pdwSz, dwSz, GLE_OK)        \
 do {                                                                            \
     size = dwSz;                                                                \
-    SetLastError(0);                                                            \
+    SetLastError(0xfaceabad);                                                   \
     ret = pGetStandardColorSpaceProfileA(pMachName, dwProfID, pProfName, pdwSz);\
     GLE = GetLastError();                                                       \
     ok( !ret && GLE_OK,                                                         \
@@ -562,7 +562,7 @@
 #define fail_GSCSPW(pMachName, dwProfID, pProfName, pdwSz, dwSz, GLE_OK)        \
 do {                                                                            \
     size = dwSz;                                                                \
-    SetLastError(0);                                                            \
+    SetLastError(0xfaceabad);                                                   \
     ret = pGetStandardColorSpaceProfileW(pMachName, dwProfID, pProfName, pdwSz);\
     GLE = GetLastError();                                                       \
     ok( !ret && GLE_OK,                                                         \