cmdline: fix warning for unused return value

When DPDK is compiled on Ubuntu with extra warnings turned on, there is a
warning about the return value from write() being unchecked. Rather than
having builds disable the warning, which may mask other cases we do care
about, we can add a dummy use of the return value in the code to silence it
in this instance.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by: Harry van Haaren <harry.van.haaren@intel.com>

diff --git a/lib/librte_cmdline/cmdline.c b/lib/librte_cmdline/cmdline.c
index a9c47be..d749165 100644 (file)
--- a/lib/librte_cmdline/cmdline.c
+++ b/lib/librte_cmdline/cmdline.c
@@ -205,7 +205,8 @@ cmdline_printf(const struct cmdline *cl, const char *fmt, ...)
        }
        if (ret >= BUFSIZ)
                ret = BUFSIZ - 1;
-       write(cl->s_out, buf, ret);
+       ret = write(cl->s_out, buf, ret);
+       (void)ret;
        free(buf);
 #endif
 }