Update core.c

fixed indent and vars

src/lua-lxc/core.c

@@ -381,21 +381,21 @@ static int container_attach(lua_State *L)
     struct lxc_container *c = lua_unboxpointer(L, 1, CONTAINER_TYPENAME);
     int argc = lua_gettop(L);
     char **argv = NULL;
-    int i,j;
+    int i;
 
     if (argc > 1) {
 	argv = alloca((argc+1) * sizeof(char *));
-	for (i = 0, j = 0; i < argc-1; i++) {
-	    const char *arg = luaL_checkstring(L, i+2);
-		argv[j++] = strdupa(arg);
-	  }
-	  argv[j] = NULL;
-    }
-	else
-	{
-	  lua_pushnil(L);
-	  return 1;
+	for (i = 0; i < argc-1; i++) {
+		const char *arg = luaL_checkstring(L, i+2);
+		argv[i] = strdupa(arg);
 	}
+	argv[i] = NULL;
+    }
+    else
+    {
+    	lua_pushnil(L);
+    	return 1;
+    }
 
     lua_pushboolean(L, !!(c->attach_run_wait(c, NULL, argv[0], (const char**)argv)));
     return 1;