module-filter-apply: Fix a memory leak

module-filter-apply: Fix a memory leak

Dynamic memory allocated to 'module_name' and 'fltr' was being leaked.
Its now freed properly before return.

BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=95293
Signed-off-by: Sachin Kumar Chauhan <sachin.kc@samsung.com>
Signed-off-by: Arun Raghavan <arun@arunraghavan.net>
This patch based on:
https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/?id=a19e1e5382ca9c193d9fa33356465b040f55a672

filter-apply: fix typo "what" -> "want"

This patch based on:
https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/?id=71b128aaeabfdb0b5845ef062d8ddfd56baa77a8

Note for tizen:
The purpose of these patches is that sync code with upstream.

Change-Id: I0a8e2de2312752520e868c0dc0e84fa31bd12a00