Oops - fix function prototype attribute.

LUFA/Drivers/USB/Class/Host/CDCClassHost.h

@@ -291,7 +291,7 @@
 			 *  \param[in,out] Stream            Pointer to a FILE structure where the created stream should be placed.
 			 */
 			void CDC_Host_CreateStream(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
-			                           FILE* const Stream) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);
+			                           FILE* const Stream) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);
 
 			/** Identical to \ref CDC_Host_CreateStream(), except that reads are blocking until the calling stream function terminates
 			 *  the transfer. While blocking, the USB and CDC service tasks are called repeatedly to maintain USB communications.