RFR(XS): 8210912: Build error in src/jdk.crypto.cryptoki/share/native/libj2pkcs11/p11_convert.c after JDK-8029661

[Mikael Vidstedt]

Please review this change which fixes a Solaris/SPARC build issue:

bug: https://bugs.openjdk.java.net/browse/JDK-8210912 
<https://bugs.openjdk.java.net/browse/JDK-8210912>
webrev: 
http://cr.openjdk.java.net/~mikael/webrevs/8210912/webrev.00/open/webrev/ 
<http://cr.openjdk.java.net/~mikael/webrevs/8210912/webrev.00/open/webrev/>

Testing:

Tier1 test job (still in progress, but relevant builds passed).

Cheers,
Mikael