patch 8.2.4269: Coverity warns for using a NULL pointer

Problem:    Coverity warns for using a NULL pointer.
Solution:   Check for "name" to not be NULL.

Author: brammool

src/userfunc.c

@@ -4232,7 +4232,8 @@ define_function(exarg_T *eap, char_u *name_arg, garray_T *lines_to_free)
 		name = prefixed;
 	    }
 	}
-	else if (vim9script && vim_strchr(name, AUTOLOAD_CHAR) != NULL)
+	else if (vim9script && name != NULL
+				    && vim_strchr(name, AUTOLOAD_CHAR) != NULL)
 	{
 	    emsg(_(e_cannot_use_name_with_hash_in_vim9_script_use_export_instead));
 	    goto ret_free;

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4269,
 /**/
     4268,
 /**/