Fix regression.

Author: tylov

include/stc/sys/utility.h

@@ -99,7 +99,7 @@
 #define c_append_if_4(C, outcnt_ptr, cnt, pred) \
     _c_append_if(C, outcnt_ptr, _, C, cnt, pred)
 
-#define c_append_if_5(C, cnt, C_out, outcnt_ptr, pred) \
+#define c_append_if_5(C_out, outcnt_ptr, C, cnt, pred) \
     _c_append_if(C_out, outcnt_ptr, _, C, cnt, pred)
 
 // private