[Xen-changelog] Don't leak memory when realloc fails.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID c2f3f18c0d959bfdcb55828a8e387e784948ab34
# Parent  7d0fb56b4a916cccc497d200e6a8329537ce740d
Don't leak memory when realloc fails.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>

diff -r 7d0fb56b4a91 -r c2f3f18c0d95 tools/console/daemon/io.c
--- a/tools/console/daemon/io.c Wed Sep  7 19:01:31 2005
+++ b/tools/console/daemon/io.c Wed Sep  7 19:13:38 2005
@@ -279,6 +279,7 @@
 static struct domain *create_domain(int domid)
 {
        struct domain *dom;
+       char *s;
 
        dom = (struct domain *)malloc(sizeof(struct domain));
        if (dom == NULL) {
@@ -306,10 +307,11 @@
        dom->conspath = xs_get_domain_path(xs, dom->domid);
        if (dom->conspath == NULL)
                goto out;
-       dom->conspath = realloc(dom->conspath, strlen(dom->conspath) +
-                               strlen("/console") + 1);
-       if (dom->conspath == NULL)
+       s = realloc(dom->conspath, strlen(dom->conspath) +
+                   strlen("/console") + 1);
+       if (s == NULL)
                goto out;
+       dom->conspath = s;
        strcat(dom->conspath, "/console");
 
        if (!watch_domain(dom, true))

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