libstagefright: Correct the condition that checks for wma version

-Few wma clips fail to play when tried to play from music app.
-In overrideComponentName(), a wrong condition is added due to which
component name is always returned null. Due to this all wma clips use
wma component irrespective of the version. This causes playback
failure for other version clips.
-Correct this condition to ensure that all wma clips play fine.

CRs-Fixed: 548188
Change-Id: Icaafd25d9864196a1233c01e106aac0eefe6f316