schannel: Add stub implementations of SslEmptyCacheA/W.

[Hans Leidekker]

diff --git a/dlls/schannel/schannel.spec b/dlls/schannel/schannel.spec
index c330c83..6944d1d 100644
--- a/dlls/schannel/schannel.spec
+++ b/dlls/schannel/schannel.spec
@@ -26,8 +26,8 @@
 @ stdcall SpLsaModeInitialize(long ptr ptr ptr)
 @ stdcall SpUserModeInitialize(long ptr ptr ptr)
 @ stub SslCrackCertificate
-@ stub SslEmptyCacheA
-@ stub SslEmptyCacheW
+@ stdcall SslEmptyCacheA(str long)
+@ stdcall SslEmptyCacheW(wstr long)
 @ stub SslFreeCertificate
 @ stub SslGenerateKeyPair
 @ stub SslGenerateRandomBits
diff --git a/dlls/schannel/schannel_main.c b/dlls/schannel/schannel_main.c
index 9889c5d..5f8b569 100644
--- a/dlls/schannel/schannel_main.c
+++ b/dlls/schannel/schannel_main.c
@@ -38,3 +38,15 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 
 	return TRUE;
 }
+
+BOOL WINAPI SslEmptyCacheA(LPSTR target, DWORD flags)
+{
+    FIXME("%s %x\n", debugstr_a(target), flags);
+    return TRUE;
+}
+
+BOOL WINAPI SslEmptyCacheW(LPWSTR target, DWORD flags)
+{
+    FIXME("%s %x\n", debugstr_w(target), flags);
+    return TRUE;
+}