Compiler warning in vfs.c: free' discards 'const' qualifier

[M-Bab]

At first thanks for your great project! Nice to see all its progress and continuously better integration as ESP component.

Quite simple issue here: We get a compile warning which can be easily avoided in

frogfs/src/vfs.c

Line 216 in bf6173f

free(name);

The target of name is dynamically allocated so not so constant after all. free(name) causes a warning because free wants (obviously) a non-constant input.

Several easy solutions:

1. const char *name = frogfs_get_name(entry); --> char *name = frogfs_get_name(entry);
2. free(name) --> free((char*) name)
3. free(name) --> free((void*) name)

I can create a PR for this if it helps but I am not sure which is your favorite solution.