[PATCH] rpcrt4: Use wide-char string literals.

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=82684

Your paranoid android.


=== w1064 (32 bit report) ===

rpcrt4:
06b4:server: unhandled exception 000006be at 75A89AB2

=== w1064_2qxl (64 bit report) ===

rpcrt4:
server.c:2178: Test failed: RpcBindingFree

=== w10pro64 (64 bit report) ===

rpcrt4:
server.c:2178: Test failed: RpcBindingFree

=== w10pro64_ar (64 bit report) ===

rpcrt4:
server.c:2178: Test failed: RpcBindingFree

=== w10pro64_he (64 bit report) ===

rpcrt4:
server.c:2178: Test failed: RpcBindingFree

=== w10pro64_zh_CN (64 bit report) ===

rpcrt4:
server.c:2178: Test failed: RpcBindingFree