Set last error if dwFlags are non zero in CPReleaseContext.

dlls/rsaenh/rsaenh.c

@@ -2630,6 +2630,11 @@ BOOL WINAPI RSAENH_CPReleaseContext(HCRYPTPROV hProv, DWORD dwFlags)
         return FALSE;
     }
 
+    if (dwFlags) {
+        SetLastError(NTE_BAD_FLAGS);
+        return FALSE;
+    }
+    
     return TRUE;
 }
 

dlls/rsaenh/tests/rsaenh.c

@@ -79,6 +79,11 @@ static int init_environment(void)
 
 static void clean_up_environment(void)
 {
+    BOOL result;
+
+    result = CryptReleaseContext(hProv, 1);
+    ok(!result && GetLastError()==NTE_BAD_FLAGS, "%08lx\n", GetLastError());
+		
     CryptAcquireContext(&hProv, szContainer, szProvider, PROV_RSA_FULL, CRYPT_DELETEKEYSET);
 }