libswscale/swscale.c:1183: error: Uninitialized Value
  The value read from A2 was never initialized.

libswscale/swscale.c:1183:9: 
1181.         YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1_C)
1182.     } else {
1183.         YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1B_C)
              ^
1184.     }
1185. }
