[master] e444efae5 Partially revert "tree-wide: add missing magic checks"

[Dridi Boukelmoune]

commit e444efae595634d48d257c963fdf1eb63c53ccc5
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Wed Jun 5 15:40:15 2024 +0200

    Partially revert "tree-wide: add missing magic checks"
    
    This reverts commit 328540c6ca58b8009d739ea542442a9d24372ce2 in the
    lib/libvarnishapi/vsc.c file where no magic check could be added to
    replace AN(vsm) occurrences.
    
    We should probably look for more potential net loss of assertions from
    that commit.

diff --git a/lib/libvarnishapi/vsc.c b/lib/libvarnishapi/vsc.c
index fc1f06467..7bda424ce 100644
--- a/lib/libvarnishapi/vsc.c
+++ b/lib/libvarnishapi/vsc.c
@@ -319,6 +319,7 @@ vsc_del_seg(const struct vsc *vsc, struct vsm *vsm, struct vsc_seg **spp)
 	struct vsc_seg *sp;
 
 	CHECK_OBJ_NOTNULL(vsc, VSC_MAGIC);
+	AN(vsm);
 	TAKE_OBJ_NOTNULL(sp, spp, VSC_SEG_MAGIC);
 	AZ(VSM_Unmap(vsm, sp->fantom));
 	if (sp->vj != NULL) {
@@ -342,6 +343,7 @@ vsc_add_seg(const struct vsc *vsc, struct vsm *vsm, const struct vsm_fantom *fp)
 	struct vsc_pt *pp;
 
 	CHECK_OBJ_NOTNULL(vsc, VSC_MAGIC);
+	AN(vsm);
 
 	ALLOC_OBJ(sp, VSC_SEG_MAGIC);
 	AN(sp);