Use of SH_DENYNO must be cooperative (no enforcement on Unix).

src/xpdev/wraptest.c

@@ -266,9 +266,7 @@ static void sopen_test_thread(void* arg)
 {
 	int fd;
 
-	if((fd=sopen(LOCK_FNAME,O_RDWR,SH_DENYNO))!=-1)
-		printf("!FAILURE: allowed to reopen with SH_DENYNO\n");
-	else if((fd=sopen(LOCK_FNAME,O_RDWR,SH_DENYWR))!=-1)
+	if((fd=sopen(LOCK_FNAME,O_RDWR,SH_DENYWR))!=-1)
 		printf("!FAILURE: allowed to reopen with SH_DENYWR\n");
 	else if((fd=sopen(LOCK_FNAME,O_RDWR,SH_DENYRW))!=-1)
 		printf("!FAILURE: allowed to reopen with SH_DENYRW\n");
@@ -277,4 +275,4 @@ static void sopen_test_thread(void* arg)
 
 	if(fd!=-1)
 		close(fd);
-}
\ No newline at end of file
+}