patch 9.1.0210: Motif: leaking memory when mui_mch_dialog() fails

Problem:  Motif: leaking memory when mui_mch_dialog() fails
          (LuMingYinDetect)
Solution: When allocating the label using the XmStringCreateLtoR()
          function fails, before returning also free the allocated
          buttons pointer.

fixes: #14247
closes: #14280

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 2061fec..0c053c5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    210,
+/**/
     209,
 /**/
     208,