fix the duplicated adding size in realloc

when failed to expand neighbor in realloc, try to malloc using wrong size
which is aligned with adding chunck size

diff --git a/os/mm/mm_heap/mm_realloc.c b/os/mm/mm_heap/mm_realloc.c
index 002dcb8..950a8e7 100644 (file)
--- a/os/mm/mm_heap/mm_realloc.c
+++ b/os/mm/mm_heap/mm_realloc.c
@@ -109,6 +109,7 @@ FAR void *mm_realloc(FAR struct mm_heap_s *heap, FAR void *oldmem, size_t size)
        FAR struct mm_allocnode_s *oldnode;
        FAR struct mm_freenode_s  *prev;
        FAR struct mm_freenode_s  *next;
+       size_t origsize;
        size_t oldsize;
        size_t prevsize = 0;
        size_t nextsize = 0;
@@ -131,6 +132,7 @@ FAR void *mm_realloc(FAR struct mm_heap_s *heap, FAR void *oldmem, size_t size)
                return NULL;
        }
 
+       origsize = size;
        /* Adjust the size to account for (1) the size of the allocated node and
         * (2) to make sure that it is an even multiple of our granule size.
         */
@@ -371,9 +373,9 @@ FAR void *mm_realloc(FAR struct mm_heap_s *heap, FAR void *oldmem, size_t size)
                 */
                mm_givesemaphore(heap);
 #ifdef CONFIG_DEBUG_MM_HEAPINFO
-               newmem = (FAR void *)mm_malloc(heap, size, caller_retaddr);
+               newmem = (FAR void *)mm_malloc(heap, origsize, caller_retaddr);
 #else
-               newmem = (FAR void *)mm_malloc(heap, size);
+               newmem = (FAR void *)mm_malloc(heap, origsize);
 #endif
                if (newmem) {
                        memcpy(newmem, oldmem, oldsize);