vim-patch:8.1.0833: memory leak when jumps output is filtered

Problem:    Memory leak when jumps output is filtered.
Solution:   Free the filtered name. (Dominique Pelle, closes vim/vim#3869)
d93090f41f

src/nvim/mark.c

@@ -792,6 +792,7 @@ void ex_jumps(exarg_T *eap)
 
       // apply :filter /pat/ or file name not available
       if (name == NULL || message_filtered(name)) {
+        xfree(name);
         continue;
       }