Fix debug build after clean reset

core/tiny_free_magazine.inc.h

@@ -7,6 +7,7 @@
 // Prerequisites: ss, meta, class_idx, ptr variables must be defined in calling scope
 
 #if !HAKMEM_BUILD_RELEASE
+    if (!slab) {
         // SuperSlab uses Magazine for TLS caching (same as TinySlab)
         tiny_small_mags_init_once();
         if (class_idx > 3) tiny_mag_init_if_needed(class_idx);
@@ -200,6 +201,7 @@
 #endif
         HAK_STAT_FREE(class_idx);
         return;
+    }
 #endif  // HAKMEM_BUILD_RELEASE
 
     // Phase 7.6: TinySlab path (original)