Remove OPTION section in output of 'virsh help command' if no option exists.

[Zhang Xiaohe <zhangxh@xxxxxxxxxxxxxx>]

Don't print 'OPTION' if there's no options. Just behaves as DESCRIPTION 
does.
This mostly affects 'interface' command group.

Signed-off-by: Zhang Xiaohe <zhangxh@xxxxxxxxxxxxxx>
Reported-by: Li Yang <liyang.fnst@xxxxxxxxxxxxxx>
---
 tools/virsh.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/tools/virsh.c b/tools/virsh.c
index ecb7bd4..7c60800 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -1270,7 +1270,9 @@ vshCmddefHelp(vshControl *ctl, const char *cmdname)

         if (def->opts) {
             const vshCmdOptDef *opt;
-            fputs(_("\n  OPTIONS\n"), stdout);
+            /* Print the option only if there are options */
+            if (def->opts->name)
+                fputs(_("\n  OPTIONS\n"), stdout);
             for (opt = def->opts; opt->name; opt++) {
                 switch (opt->type) {
                 case VSH_OT_BOOL:
--
1.7.1

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