[PATCH] Fix build without debug

[Roman Bogorodskiy]

When building without debug build fails with:

  CCLD     p11-kit/p11-kit
./.libs/libp11-kit.so: undefined reference to `P11_RPC_CHECK_CALLS'
cc: error: linker command failed with exit code 1 (use -v to see
invocation)
gmake[2]: *** [p11-kit/p11-kit] Error 1

This happens because P11_RPC_CHECK_CALLS is not defined when
debugging is enabled, so provide a noop macro for that case.
---
 p11-kit/rpc-message.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/p11-kit/rpc-message.h b/p11-kit/rpc-message.h
index f85265b..fc4d06e 100644
--- a/p11-kit/rpc-message.h
+++ b/p11-kit/rpc-message.h
@@ -207,6 +207,8 @@ static const p11_rpc_call p11_rpc_calls[] = {
 #ifdef _DEBUG
 #define P11_RPC_CHECK_CALLS() \
 	{ int i; for (i = 0; i < P11_RPC_CALL_MAX; ++i) assert (p11_rpc_calls[i].call_id == i); }
+#else
+#define P11_RPC_CHECK_CALLS()
 #endif
 
 #define P11_RPC_HANDSHAKE \
-- 
2.0.2