AudioFlinger: put effect desc lookup under mutex for createEffect

Test: native poc
Bug: 122309228
Change-Id: I48333c69f5c1b1bf1b98f57eb813ec39e074f3a7
Merged-In: I9d339a7d6d81161065e1adaf427dd2d3430436c2
(cherry picked from commit a41770b682117fdfc20236fbc45d975099f9147a)
1 file changed