Small fixes to TCP example

- don't write more data to socket than is left in buffer
- add missing LF in client printf()

examples/linux/client-tcp.c

@@ -73,7 +73,7 @@ int main(int argc, char* argv[]) {
     uint16_t w_regs[2] = {123, 124};
     err = nmbs_write_multiple_registers(&nmbs, 26, 2, w_regs);
     if (err != NMBS_ERROR_NONE) {
-        fprintf(stderr, "Error writing register at address 26 - %s", nmbs_strerror(err));
+        fprintf(stderr, "Error writing register at address 26 - %s\n", nmbs_strerror(err));
         if (!nmbs_error_is_exception(err))
             return 1;
     }

examples/linux/platform.h

@@ -236,7 +236,7 @@ int32_t write_fd_linux(const uint8_t* buf, uint16_t count, int32_t timeout_ms, v
         }
 
         if (ret == 1) {
-            ssize_t w = write(fd, buf + total, count);
+            ssize_t w = write(fd, buf + total, count - total);
             if (w == 0) {
                 disconnect(arg);
                 return -1;