--- libmalloc/libmalloc-67/src/nano_malloc.c
+++ libmalloc/libmalloc-53.1.1/src/nano_malloc.c
@@ -377,23 +377,19 @@
 	pMeta->slot_current_base_addr = p;
 
 	mach_vm_address_t vm_addr = p & ~((uintptr_t)(BAND_SIZE - 1)); // Address of the (2MB) band covering this (128KB) slot
-
-	if (nanozone->band_max_mapped_baseaddr[mag_index] < vm_addr) {
-		// Obtain the next band to cover this slot
-		kern_return_t kr = mach_vm_map(mach_task_self(), &vm_addr, BAND_SIZE,
-		                               0, VM_MAKE_TAG(VM_MEMORY_MALLOC_NANO), MEMORY_OBJECT_NULL, 0, FALSE,
-		                               VM_PROT_DEFAULT, VM_PROT_ALL, VM_INHERIT_DEFAULT);
-
-		void *q = (uintptr_t)vm_addr;
-		if (kr || q != (void *)(p & ~((uintptr_t)(BAND_SIZE - 1)))) { // Must get exactly what we asked for
-			if (!kr) {
-				mach_vm_deallocate(mach_task_self(), vm_addr, BAND_SIZE);
-			}
-			return FALSE;
-		}
-
-		nanozone->band_max_mapped_baseaddr[mag_index] = vm_addr;
-	}
+    
+    if (nanozone->band_max_mapped_baseaddr[mag_index] < vm_addr) {
+        // Obtain the next band to cover this slot
+        kern_return_t kr = mach_vm_map(mach_task_self(), &vm_addr, BAND_SIZE,
+                0, VM_MAKE_TAG(VM_MEMORY_MALLOC_NANO), MEMORY_OBJECT_NULL, 0, FALSE,
+                VM_PROT_DEFAULT, VM_PROT_ALL, VM_INHERIT_DEFAULT);
+
+        void *q = (uintptr_t)vm_addr;
+        if (kr || q != (void *)(p & ~((uintptr_t)(BAND_SIZE - 1)))) // Must get exactly what we asked for
+            return FALSE;
+        
+        nanozone->band_max_mapped_baseaddr[mag_index] = vm_addr;
+    }
 
 	// Randomize the starting allocation from this slot (introduces 11 to 14 bits of entropy)
 	if (0 == pMeta->slot_objects_mapped) { // First encounter?
@@ -1397,7 +1393,6 @@
 				// _malloc_printf(ASL_LEVEL_WARNING,"slot_bitarray: %db page_bitarray: %db\n", bitarray_size(log_size), bitarray_size(log_page_count));
 				if (!slot_bitarray) {
 					malloc_printf("bitarray_create(%d) in nano_try_madvise returned errno=%d.", log_size, errno);
-					free(page_bitarray);
 					return bytes_toward_goal;
 				}