trace-cmd record: Check allocation of creating path variable

The reset->path = strdup(file) should check if the allocation fails.

Link: https://lore.kernel.org/20261021162008.3696574a@gandalf.local.home
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217126
Reported-by: Markus Elfring <Markus.Elfring@web.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>