Exit after reading EOF

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2221 42af7a65-404d-4744-a932-0658087f49c3

examples/usbserial/host.c

@@ -237,6 +237,11 @@ int main(int argc, char **argv, char **envp)
           close(fd);
           return 2;
         }
+      else if (nbytes == 0)
+        {
+          printf("main: End-of-file encountereDs\n");
+          break;
+        }
 
       g_iobuffer[nbytes] = '\0';
       printf("main: Received %d bytes:\n", nbytes);
@@ -282,8 +287,6 @@ int main(int argc, char **argv, char **envp)
 #endif /* CONFIG_EXAMPLES_USBSERIAL_INONLY */
     }
 
-  /* Won't get here, but if we did this what we would have to do */
-
   close(fd);
   return 0;
 }