The Vita doesn't use FSAA so it is safe to set this to zero.
source/gl_vidsdl.c: In function 'VID_SetMode':
source/gl_vidsdl.c:823:2: warning: 'fsaa_obtained' is used uninitialized in this function [-Wuninitialized]
823 | Con_SafePrintf ("Video mode %dx%dx%d %dHz (%d-bit z-buffer, %dx FSAA) initialized\n",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
824 | VID_GetCurrentWidth(),
| ~~~~~~~~~~~~~~~~~~~~~~
825 | VID_GetCurrentHeight(),
| ~~~~~~~~~~~~~~~~~~~~~~~
826 | VID_GetCurrentBPP(),
| ~~~~~~~~~~~~~~~~~~~~
827 | VID_GetCurrentRefreshRate(),
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
828 | depthbits,
| ~~~~~~~~~~
829 | fsaa_obtained);
| ~~~~~~~~~~~~~~
