0001-some-fixes-for-FreeMODBUS-and-MODBUS-example.patch from Freddi Chopin

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5372 42af7a65-404d-4744-a932-0658087f49c3

apps/examples/modbus/modbus_main.c

@@ -217,7 +217,7 @@ static inline int modbus_initialize(void)
   /* Enable FreeModBus */
 
   mberr = eMBEnable();
-  if (mberr == MB_ENOERR)
+  if (mberr != MB_ENOERR)
     {
       fprintf(stderr, "modbus_main: "
               "ERROR: eMBEnable failed: %d\n", mberr);
@@ -267,6 +267,8 @@ static void *modbus_pollthread(void *pvarg)
       return NULL;
     }
 
+  srand(time(NULL));
+
   /* Then loop until we are commanded to shutdown */
 
   do