From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Sun, 4 Apr 2004 20:36:29 +0000 (+0000)
Subject: fixing free
X-Git-Tag: release_0_9_0-iwjtag~1688
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=57c30724825ac4601da66562ebe56d3147275b47;p=qemu-xen-4.4-testing.git

fixing free


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@707 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/osdep.c b/osdep.c
index aa061a90a..83f5a77cc 100644
--- a/osdep.c
+++ b/osdep.c
@@ -235,6 +235,8 @@ void qemu_free(void *ptr)
 {
     MemoryBlock *mb;
 
+    if (!ptr)
+        return;
     mb = (MemoryBlock *)((uint8_t *)ptr - BLOCK_HEADER_SIZE);
     mb->next = first_free_block;
     first_free_block = mb;