efl_ui_selection_manager: free allocated memory after local use

This temporary allocation is only used in this block and goes out of
scope when leaving. Make sure we free the resource before this happens.

Coverity ID: 1402653

Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Differential Revision: https://phab.enlightenment.org/D10045

src/lib/elementary/efl_ui_selection_manager.c

@@ -2429,6 +2429,7 @@ _wl_general_converter(char *target, Sel_Manager_Selection *sel, void *data, int
                   memcpy(tmp, data, size);
                   if (data_ret) *data_ret = tmp;
                   if (size_ret) *size_ret = size;
+                  if (!data_ret) free(tmp);
                }
           }
         else