add: plug memory leak

At the end of the add command, disable and free the fscache so that we
don't leak the memory and so that we can dump the fscache statistics.

Signed-off-by: Ben Peart <[email protected]>

Author: benpeart

builtin/add.c

@@ -622,6 +622,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 		die(_("Unable to write new index file"));
 
 	dir_clear(&dir);
+	enable_fscache(0);
 	UNLEAK(pathspec);
 	return exit_status;
 }