(try to) Fix some Windows specific bits from the ringbuf change

src/sbbs3/sbbsexec.c

@@ -31,6 +31,7 @@
 #include "ini_file.h"
 #include "git_branch.h"
 #include "git_hash.h"
+#include "eventwrap.h"
 
 #define INI_FILENAME			"sbbsexec.ini"
 #define RINGBUF_SIZE_IN			10000
@@ -287,7 +288,7 @@ unsigned vdd_read(BYTE* p, unsigned count)
 	count=RingBufRead(&rdbuf,p,count);
 	if(count==0) {
 		lputs(LOG_ERR,"!VDD_READ: RingBufRead read 0, waiting");
-		if(sem_trywait_block(&rdbuf.sem, READ_TIMEOUT) != 0)
+		if(WaitforEvent(rdbuf.data_event, READ_TIMEOUT) != WAIT_OBJECT_0)
 			lputs(LOG_ERR,"!VDD_READ: rdbuf sem timeout");
 		count = RingBufRead(&rdbuf,p,count);
 		lputs(LOG_ERR,"!VDD_READ: RingBufRead read 0 (after wait)");

src/sbbs3/xtrn.cpp

@@ -821,7 +821,7 @@ int sbbs_t::external(const char* cmdline, long mode, const char* startup_dir)
 					if(!(startup->options&BBS_OPT_NO_TELNET_GA))
 						send_telnet_cmd(TELNET_GA,0);
 				}
-				sem_trywait_block(&inbuf.sem,100);
+				WaitForEvent(inbuf.data, 100);
             } else
 				loop_since_io=0;
         }