core: set shm xsetfunc api field

- fix wrong variable added in previous commit for pkg api

src/core/mem/pkg.c

@@ -51,7 +51,7 @@ int pkg_init_api(sr_pkg_api_t *ap)
 	_pkg_root.xrealloc = ap->xrealloc;
 	_pkg_root.xreallocxf = ap->xreallocxf;
 	_pkg_root.xstatus = ap->xstatus;
-	_shm_root.xstatus_filter = ap->xstatus_filter;
+	_pkg_root.xstatus_filter = ap->xstatus_filter;
 	_pkg_root.xinfo = ap->xinfo;
 	_pkg_root.xreport = ap->xreport;
 	_pkg_root.xavailable = ap->xavailable;

src/core/mem/shm.c

@@ -252,6 +252,7 @@ int shm_init_api(sr_shm_api_t *ap)
 	_shm_root.xfmodstats = ap->xfmodstats;
 	_shm_root.xglock = ap->xglock;
 	_shm_root.xgunlock = ap->xgunlock;
+	_shm_root.xsetfunc = ap->xsetfunc;
 	return 0;
 }