patch 9.1.2116: crash when using 'tagfunc'

Problem:  crash when using 'tagfunc' (Rodrigo Queipo)
Solution: Do not add the user_data to the 'info' dictionary when called
          for insert mode completion (the TAG_INS_COMP flag is set).
          Completion should not depend on the state of a previous tag
          jump. (Yasuhiro Matsumoto)

fixes:  #19255
closes: #19284

Signed-off-by: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/tag.c

@@ -1460,7 +1460,7 @@ find_tagfunc_tags(
     // create 'info' dict argument
     if ((d = dict_alloc_lock(VAR_FIXED)) == NULL)
 	return FAIL;
-    if (tag->user_data != NULL)
+    if (!(flags & TAG_INS_COMP) && tag->user_data != NULL)
 	dict_add_string(d, "user_data", tag->user_data);
     if (buf_ffname != NULL)
 	dict_add_string(d, "buf_ffname", buf_ffname);

src/version.c

@@ -734,6 +734,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2116,
 /**/
     2115,
 /**/