[PATCH] wcd9335: fix a incorrect use of kstrndup()

[Gen Zhang]

In wcd9335_codec_enable_dec(), 'widget_name' is allocated by kstrndup().
However, according to doc: "Note: Use kmemdup_nul() instead if the size
is known exactly." So we should use kmemdup_nul() here instead of
kstrndup().

Signed-off-by: Gen Zhang <blackgod016...@gmail.com>
---
diff --git a/sound/soc/codecs/wcd9335.c b/sound/soc/codecs/wcd9335.c
index a04a7ce..85737fe 100644
--- a/sound/soc/codecs/wcd9335.c
+++ b/sound/soc/codecs/wcd9335.c
@@ -2734,7 +2734,7 @@ static int wcd9335_codec_enable_dec(struct 
snd_soc_dapm_widget *w,
        char *dec;
        u8 hpf_coff_freq;
 
-       widget_name = kstrndup(w->name, 15, GFP_KERNEL);
+       widget_name = kmemdup_nul(w->name, 15, GFP_KERNEL);
        if (!widget_name)
                return -ENOMEM;
 
---