winspool.drv: Ensure unixlib function tables and enum stay in sync.

dlls/winspool.drv/cups.c

@@ -433,6 +433,8 @@ const unixlib_entry_t __wine_unix_call_funcs[] =
     get_ppd,
 };
 
+C_ASSERT( ARRAYSIZE(__wine_unix_call_funcs) == unix_funcs_count );
+
 #ifdef _WIN64
 
 typedef ULONG PTR32;
@@ -523,4 +525,6 @@ const unixlib_entry_t __wine_unix_call_wow64_funcs[] =
     wow64_get_ppd,
 };
 
+C_ASSERT( ARRAYSIZE(__wine_unix_call_wow64_funcs) == unix_funcs_count );
+
 #endif  /* _WIN64 */

dlls/winspool.drv/wspool.h

@@ -72,4 +72,5 @@ enum cups_funcs
     unix_enum_printers,
     unix_get_default_page_size,
     unix_get_ppd,
+    unix_funcs_count,
 };