make {linux,bsd}-user qemu_realloc handle ptr == NULL correctly.
spotted by malc.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6466
c046a42c-6fe2-441c-8c8c-
71466251a162
size_t old_size, copy;
void *new_ptr;
+ if (!ptr)
+ return qemu_malloc(size);
old_size = *(size_t *)((char *)ptr - 16);
copy = old_size < size ? old_size : size;
new_ptr = qemu_malloc(size);
size_t old_size, copy;
void *new_ptr;
+ if (!ptr)
+ return qemu_malloc(size);
old_size = *(size_t *)((char *)ptr - 16);
copy = old_size < size ? old_size : size;
new_ptr = qemu_malloc(size);