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Move nothing when there is nothing to move

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This commit is contained in:
Roberto Ierusalimschy 2003-07-07 10:34:25 -03:00
parent 0ec4c473df
commit a73ded2153
1 changed files with 2 additions and 1 deletions
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3
lapi.c
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@ -1,5 +1,5 @@
/* /*
** $Id: lapi.c,v 1.238 2003/05/09 20:16:54 roberto Exp roberto $ ** $Id: lapi.c,v 1.239 2003/05/14 21:06:56 roberto Exp roberto $
** Lua API ** Lua API
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -96,6 +96,7 @@ LUA_API int lua_checkstack (lua_State *L, int size) {
LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) { LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) {
int i; int i;
if (from == to) return;
lua_lock(to); lua_lock(to);
api_checknelems(from, n); api_checknelems(from, n);
from->top -= n; from->top -= n;