1 files changed, 6 insertions, 4 deletions

diff --git a/lcorolib.c b/lcorolib.c
index 23dd8441..eb30bf4d 100644
--- a/lcorolib.c
+++ b/lcorolib.c
@@ -189,15 +189,17 @@ static int luaB_close (lua_State *L) {
         return 2;
       }
     }
-    case COS_RUN:  /* running coroutine? */
+    case COS_NORM:
+      return luaL_error(L, "cannot close a %s coroutine", statname[status]);
+    case COS_RUN:
       lua_geti(L, LUA_REGISTRYINDEX, LUA_RIDX_MAINTHREAD);  /* get main */
       if (lua_tothread(L, -1) == co)
         return luaL_error(L, "cannot close main thread");
       lua_closethread(co, L);  /* close itself */
-      lua_assert(0);  /* previous call does not return */
+      /* previous call does not return *//* FALLTHROUGH */
+    default:
+      lua_assert(0);
       return 0;
-    default:  /* normal or running coroutine */
-      return luaL_error(L, "cannot close a %s coroutine", statname[status]);
   }
 }