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e62ed261c5
`base/runtime`: do not free the original block on a failed heap resize The default heap allocator freed old_ptr when the underlying allocation failed (allocated_mem == nil). On the realloc path (heap_resize) the original block is left intact on failure, and on the copy/fresh path old_ptr has not been copied or freed yet, so freeing it left the caller holding a dangling pointer. A [dynamic] array whose resize failed therefore double-freed its data on the next delete (reported as free(): invalid pointer / use-after-free). Return .Out_Of_Memory without freeing anything; the caller retains ownership of the original block. Fixes #7262