semihosting: don't send the trailing '\0'

Don't send the trailing 0 from the string.

Signed-off-by: KONRAD Frederic <[email protected]>
Signed-off-by: Alex Bennée <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Message-Id: <[email protected]>
Message-Id: <[email protected]>

Author: KONRAD Frederic

hw/semihosting/console.c

@@ -52,7 +52,9 @@ static GString *copy_user_string(CPUArchState *env, target_ulong addr)
 
     do {
         if (cpu_memory_rw_debug(cpu, addr++, &c, 1, 0) == 0) {
-            s = g_string_append_c(s, c);
+            if (c) {
+                s = g_string_append_c(s, c);
+            }
         } else {
             qemu_log_mask(LOG_GUEST_ERROR,
                           "%s: passed inaccessible address " TARGET_FMT_lx,