Zero memory allocated by wasm_memory_storage

packages/php-wasm/compile/php-wasm-memory-storage/wasm_memory_storage.c

@@ -17,6 +17,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include "php.h"
 #include "ext/standard/info.h"
 #include "Zend/zend_alloc.h"
@@ -42,6 +43,7 @@ void* wasm_memory_storage_chunk_alloc(zend_mm_storage* storage, size_t size, siz
 	if (posix_memalign(&ptr, alignment, size) == 0)
 	{
 		fprintf(stderr, "wasm_memory_storage_chunk_alloc: allocated: %p, size=%zu, alignment=%zu\n", ptr, size, alignment);
+		memset(ptr, 0, size);
 		return ptr;
 	} else {
 		fprintf(stderr, "wasm_memory_storage_chunk_alloc: failed\n");