fix -Wmissing-field-initializers warning

fixes:
Clock.c:269:6: warning: missing initializer for field ‘extension’ of ‘SimpleClassPart’ [-Wmissing-field-initializers]

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/Clock.c b/Clock.c
index 1a6f685..5b33535 100644
--- a/Clock.c
+++ b/Clock.c
@@ -265,7 +265,8 @@ ClockClassRec clockClassRec = {
      /* extension                */ NULL
      },
     {                           /* simple fields */
-     /* change_sensitive         */ XtInheritChangeSensitive
+     /* change_sensitive         */ XtInheritChangeSensitive,
+     /* extension                */ NULL
      },
     {                           /* clock fields */
      /* ignore                   */ 0