[PATCH 3/4] libexport.a: Allow m_hostname allocation to fail instead of exit

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Clean up: Replace xstrdup() with strdup(3) in client_init(), to
prevent the process from exiting if the memory allocation fails.

Note that both of client_init()'s callers set m_hostname equal to NULL
before calling, thus the extra free(3) at the top of client_init() is
unneeded.

Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---

 support/export/client.c |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/support/export/client.c b/support/export/client.c
index 8f83da3..fc1ade9 100644
--- a/support/export/client.c
+++ b/support/export/client.c
@@ -55,7 +55,7 @@ init_addrlist(nfs_client *clp, const struct hostent *hp)
 static void
 client_free(nfs_client *clp)
 {
-	xfree(clp->m_hostname);
+	free(clp->m_hostname);
 	xfree(clp);
 }
 
@@ -154,11 +154,9 @@ client_dup(nfs_client *clp, struct hostent *hp)
 static int
 client_init(nfs_client *clp, const char *hname, struct hostent *hp)
 {
-	xfree(clp->m_hostname);
-	if (hp)
-		clp->m_hostname = xstrdup(hp->h_name);
-	else
-		clp->m_hostname = xstrdup(hname);
+	clp->m_hostname = strdup(hname);
+	if (clp->m_hostname == NULL)
+		return false;
 
 	clp->m_exported = 0;
 	clp->m_count = 0;

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