libswscale/yuv2rgb.c:211: error: Uninitialized Value
  The value read from pa_1 was never initialized.

libswscale/yuv2rgb.c:211:5: 
209.     PUTRGBA(dst_2,py_2,pa_2,3,1,0);
210.     PUTRGBA(dst_1,py_1,pa_1,3,0,0);
211.     pa_1 += 8;\
         ^
212.     pa_2 += 8;\
213. ENDYUV2RGBLINE(8)
