Use persistent table

src/nnn.c

@@ -511,7 +511,7 @@ static uchar crc8fast(const uchar * const message, size_t n)
 	size_t byte;
 
 	/* CRC data */
-	const uchar crc8table[CRC8_TABLE_LEN] __attribute__ ((aligned)) = {
+	static const uchar crc8table[CRC8_TABLE_LEN] __attribute__ ((aligned)) = {
 		  0,  94, 188, 226,  97,  63, 221, 131, 194, 156, 126,  32, 163, 253,  31,  65,
 		157, 195,  33, 127, 252, 162,  64,  30,  95,   1, 227, 189,  62,  96, 130, 220,
 		 35, 125, 159, 193,  66,  28, 254, 160, 225, 191,  93,   3, 128, 222,  60,  98,