Fix a 64-bit-cleanness error in sshcrc's generator.

Not that anyone actually needs to use that conditioned-out main(),
since it only generates the table already present in the same source
file, but since @ch3root's unused-variable patch touched it I tried
compiling it and noticed in passing that I'd also got the wrong printf
format directive for an unsigned long.

(cherry picked from commit 9351a5bfe4)

sshcrc.c

@@ -202,7 +202,7 @@ int main(void)
 
     crc32_init();
     for (i = 0; i < 256; i++) {
-	printf("%s0x%08XL%s",
+	printf("%s0x%08lXL%s",
 	       (i % 4 == 0 ? "    " : " "),
 	       crc32_table[i],
 	       (i % 4 == 3 ? (i == 255 ? "\n" : ",\n") : ","));