hex constant

Rather than newer standards-version binary constant.

SP5WWP/m17-packet/m17-packet-encode.c

@@ -232,7 +232,7 @@ int main(int argc, char* argv[])
     //fprintf(stderr, "DST: %02X %02X %02X %02X %02X %02X\n", lsf.dst[0], lsf.dst[1], lsf.dst[2], lsf.dst[3], lsf.dst[4], lsf.dst[5]);
     //fprintf(stderr, "SRC: %02X %02X %02X %02X %02X %02X\n", lsf.src[0], lsf.src[1], lsf.src[2], lsf.src[3], lsf.src[4], lsf.src[5]);
     fprintf(stderr, "Data CRC:\t%04hX\n", packet_crc);
-    type=((uint16_t)0b01<<1)|((uint16_t)can<<7); //packet mode, content: data
+    type=((uint16_t)0x01<<1)|((uint16_t)can<<7); //packet mode, content: data
     lsf.type[0]=(uint16_t)type>>8;
     lsf.type[1]=(uint16_t)type&0xFF;
     memset(&lsf.meta, 0, 112/8);