include: Fix a typo in a comment in rpcdce.h.
diff --git a/include/rpcdce.h b/include/rpcdce.h
index f6b5ab5..3fd4923 100644
--- a/include/rpcdce.h
+++ b/include/rpcdce.h
@@ -139,7 +139,7 @@
 #define RPC_C_AUTHN_MQ 100
 #define RPC_C_AUTHN_DEFAULT 0xffffffff
 
-/* values for RPC_SECURITY_QOS*::ImpersonationLevel */
+/* values for RPC_SECURITY_QOS*::ImpersonationType */
 #define RPC_C_IMP_LEVEL_DEFAULT     0
 #define RPC_C_IMP_LEVEL_ANONYMOUS   1
 #define RPC_C_IMP_LEVEL_IDENTIFY    2