get_media_devices: Get rid if asprintf

It is a GNU extension and thus not declared in the std headers when
compiling without _GNU_SOURCE

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/utils/libmedia_dev/get_media_devices.c b/utils/libmedia_dev/get_media_devices.c
index d120023..948617a 100644 (file)
--- a/utils/libmedia_dev/get_media_devices.c
+++ b/utils/libmedia_dev/get_media_devices.c
@@ -230,7 +230,7 @@ static int add_v4l_class(struct media_device_entry *md)
 static int add_snd_class(struct media_device_entry *md)
 {
        unsigned c = 65535, d = 65535;
-       char *new;
+       char node[64];
 
        if (strstr(md->node, "timer")) {
                md->type = MEDIA_SND_TIMER;
@@ -259,18 +259,13 @@ static int add_snd_class(struct media_device_entry *md)
                return 0;
 
        /* Reformat device to be useful for alsa userspace library */
-       if (d == 65535) {
-               if (asprintf(&new, "hw:%u", c) > 0) {
-                       free(md->node);
-                       md->node = new;
-               }
-               return 0;
-       }
+       if (d == 65535)
+               snprintf(node, sizeof(node), "hw:%u", c);
+       else
+               snprintf(node, sizeof(node), "hw:%u,%u", c, d);
 
-       if (asprintf(&new, "hw:%u,%u", c, d) > 0) {
-               free(md->node);
-               md->node = new;
-       }
+       free(md->node);
+       md->node = strdup(node);
 
        return 0;
 };