libavcodec/bmp.c:148: error: Uninitialized Value
  The value read from rgb[_] was never initialized.

libavcodec/bmp.c:148:13: 
146.     case 32:
147.         if (comp == BMP_BITFIELDS) {
148.             rgb[0] = (rgb[0] >> 15) & 3;
                 ^
149.             rgb[1] = (rgb[1] >> 15) & 3;
150.             rgb[2] = (rgb[2] >> 15) & 3;
