libexport.a: Add export_free()

From: Chuck Lever <chuck.lever@oracle.com>

Clean up: Introduce a helper to free an nfs_export record.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
---
 support/export/export.c |   27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

--- nfs-utils-1.2.1.orig/support/export/export.c
+++ nfs-utils-1.2.1/support/export/export.c
@@ -28,6 +28,18 @@ static int	export_check(nfs_export *, st
 static nfs_export *
 		export_allowed_internal(struct hostent *hp, char *path);
 
+static void
+export_free(nfs_export *exp)
+{
+	xfree(exp->m_export.e_squids);
+	xfree(exp->m_export.e_sqgids);
+	free(exp->m_export.e_mountpoint);
+	free(exp->m_export.e_fslocdata);
+
+	xfree(exp->m_export.e_hostname);
+	xfree(exp);
+}
+
 static void warn_duplicated_exports(nfs_export *exp, struct exportent *eep)
 {
 	if (exp->m_export.e_flags != eep->e_flags) {
@@ -259,6 +271,10 @@ export_check(nfs_export *exp, struct hos
 	return client_check(exp->m_client, hp);
 }
 
+/**
+ * export_freeall - deallocate all nfs_export records
+ *
+ */
 void
 export_freeall(void)
 {
@@ -269,16 +285,7 @@ export_freeall(void)
 		for (exp = exportlist[i].p_head; exp; exp = nxt) {
 			nxt = exp->m_next;
 			client_release(exp->m_client);
-			if (exp->m_export.e_squids)
-				xfree(exp->m_export.e_squids);
-			if (exp->m_export.e_sqgids)
-				xfree(exp->m_export.e_sqgids);
-			if (exp->m_export.e_mountpoint)
-				free(exp->m_export.e_mountpoint);
-			if (exp->m_export.e_fslocdata)
-				xfree(exp->m_export.e_fslocdata);
-			xfree(exp->m_export.e_hostname);
-			xfree(exp);
+			export_free(exp);
 		}
       for(j = 0; j < HASH_TABLE_SIZE; j++) {
         exportlist[i].entries[j].p_first = NULL;