Fix warning: missing initializer for field ‘extension’ of ‘SimpleClassPart'

grid.c:153:3: warning: missing initializer for field ‘extension’ of ‘SimpleClassPart {aka struct <anonymous>}’ [-Wmissing-field-initializers]
   }
   ^
In file included from grid.c:34:0:
/net/also.us.oracle.com/export/alanc/X.Org/amd64-gcc/install/usr/X11R7/include/X11/Xaw/SimpleP.h:62:15: note: ‘extension’ declared here
     XtPointer extension;
               ^~~~~~~~~

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

1 files changed, 2 insertions, 1 deletions

diff --git a/grid.c b/grid.c
index 56bd807..f844d37 100644
--- a/grid.c
+++ b/grid.c
@@ -149,7 +149,8 @@ FontGridClassRec fontgridClassRec = {
     /* extension                */      NULL
   },
   { /* simple fields */
-    /* change_sensitive		*/	XtInheritChangeSensitive
+    /* change_sensitive		*/	XtInheritChangeSensitive,
+    /* extension                */      NULL
   }
 };