asg/mem-alloc: Remove block expansion from split-one-block test

Do not test block expansion in malloc=split-one-block.

Signed-off-by: Alex Apostolescu <alexx.apostolescu@gmail.com>

tests/ref/test-malloc-split-one-block.ref

@@ -10,8 +10,6 @@ os_malloc (['4096'])
 os_malloc (['2048'])                                                                      = HeapStart + 0x1f0c0
 os_malloc (['1024'])                                                                      = HeapStart + 0x1f8e0
 os_malloc (['512'])                                                                       = HeapStart + 0x1fd00
-os_malloc (['256'])                                                                       = HeapStart + 0x1ff20
-  brk (['HeapStart + 0x20020'])                                                           = HeapStart + 0x20020
 os_free (['HeapStart + 0x20'])                                                            = <void>
 os_free (['HeapStart + 0x10040'])                                                         = <void>
 os_free (['HeapStart + 0x18060'])                                                         = <void>
@@ -20,5 +18,4 @@ os_free (['HeapStart + 0x1e0a0'])
 os_free (['HeapStart + 0x1f0c0'])                                                         = <void>
 os_free (['HeapStart + 0x1f8e0'])                                                         = <void>
 os_free (['HeapStart + 0x1fd00'])                                                         = <void>
-os_free (['HeapStart + 0x1ff20'])                                                         = <void>
 +++ exited (status 0) +++

tests/snippets/test-malloc-split-one-block.c

@@ -2,13 +2,15 @@
 
 #include "test-utils.h"
 
+#define NUM_SIZES 8
+
 int main(void)
 {
-	int sizes[9];
-	void *prealloc_ptr, *ptrs[9];
+	int sizes[NUM_SIZES];
+	void *prealloc_ptr, *ptrs[NUM_SIZES];
 
 	/* Init sizes */
-	for (int i = 0; i < 9; i++)
+	for (int i = 0; i < NUM_SIZES; i++)
 		sizes[i] = MMAP_THRESHOLD / (1 << (i + 1));
 
 	/* Create a free block */
@@ -16,11 +18,11 @@ int main(void)
 	os_free(prealloc_ptr);
 
 	/* Split the chunk multiple times */
-	for (int i = 0; i < 9; i++)
+	for (int i = 0; i < NUM_SIZES; i++)
 		ptrs[i] = os_malloc_checked(sizes[i]);
 
 	/* Cleanup */
-	for (int i = 0; i < 9; i++)
+	for (int i = 0; i < NUM_SIZES; i++)
 		os_free(ptrs[i]);
 
 	return 0;