cast to 'unsigned long' before using ~ if we need an unsigned long result

Submitted by: "Stefan Marxen" <stefan.marxen@gmx.net>

crypto/asn1/a_strnid.c

@@ -105,9 +105,9 @@ int ASN1_STRING_set_default_mask_asc(char *p)
 		mask = strtoul(p + 5, &end, 0);
 		if(*end) return 0;
 	} else if(!strcmp(p, "nombstr"))
-			 mask = ~(B_ASN1_BMPSTRING|B_ASN1_UTF8STRING);
+			 mask = ~((unsigned long)(B_ASN1_BMPSTRING|B_ASN1_UTF8STRING));
 	else if(!strcmp(p, "pkix"))
-			mask = ~B_ASN1_T61STRING;
+			mask = ~((unsigned long)B_ASN1_T61STRING);
 	else if(!strcmp(p, "utf8only")) mask = B_ASN1_UTF8STRING;
 	else if(!strcmp(p, "default"))
 	    mask = 0xFFFFFFFFL;