fixed the compiler to check the presense of the exception handler expression in the catch part

lib/print.c

@@ -102,7 +102,7 @@ static struct
 } word[] =
 {
 	{  8,  { '#','<','U','N','D','E','F','>' } },
-	{  4,  { 'n','u','l','l' } },
+	{  3,  { 'n','i','l' } },
 	{  4,  { 't','r','u','e' } },
 	{  5,  { 'f','a','l','s','e' } },