libswscale/yuv2rgb.c:288: error: Uninitialized Value
  The value read from pa_2 was never initialized.

libswscale/yuv2rgb.c:288:5: 
286.     PUTRGBA(dst_1, py_1, pa_2, 1, 24);
287.     pa_1 += 4;
288.     pa_2 += 4;
         ^
289. ENDYUV2RGBLINE(8, 1)
290.     LOADCHROMA(0);
