Replace "goto again" with "continue" (third case)

When the software on the other side of the pty closes the device,
the simulator would close and reopen its side  but it is unneeded
because it can continue to call read() without doing anything special.

simulators/simatd578.c

@@ -53,7 +53,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE], buf2[256];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -63,8 +62,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 8)

simulators/simft1000.c

@@ -21,7 +21,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -30,8 +29,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)

simulators/simft736.c

@@ -21,7 +21,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -30,8 +29,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)

simulators/simft747gx.c

@@ -23,7 +23,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -32,8 +31,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)

simulators/simft817.c

@@ -22,7 +22,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -31,8 +30,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)

simulators/simft847.c

@@ -24,7 +24,6 @@ int main(int argc, char *argv[])
     unsigned char buf[BUFSIZE];
     int freq, i, n;
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -33,8 +32,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)

simulators/simft897.c

@@ -25,7 +25,6 @@ int main(int argc, char *argv[])
     unsigned char buf[BUFSIZE];
     int n;
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -34,8 +33,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)

simulators/simjupiter.c

@@ -21,7 +21,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -30,8 +29,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)

simulators/simmicom.c

@@ -50,7 +50,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -59,8 +58,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         switch (buf[3])

simulators/simorion.c

@@ -40,7 +40,6 @@ int main(int argc, char *argv[])
 {
     char buf[BUFSIZE], reply[256];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -49,8 +48,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (strncmp(buf, "?V", 2) == 0)

simulators/simpmr171.c

@@ -56,7 +56,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -65,8 +64,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         switch (buf[5])

simulators/simspid.c

@@ -21,7 +21,6 @@ int main(int argc, char *argv[])
 {
     unsigned char buf[BUFSIZE];
 
-again:
     int fd = openPort(argv[1]);
 
     while (1)
@@ -30,8 +29,7 @@ again:
 
         if (bytes == 0)
         {
-            close(fd);
-            goto again;
+            continue;
         }
 
         if (bytes != 5)