libosmo-mgcp: use OSMO_STRLCPY_ARRAY in mgcp_codec_add()

Change-Id: Icc2486308577b587a6ebd1b44b2fa92693aa7fc7
Fixes: CID#240100
diff --git a/src/libosmo-mgcp/mgcp_codec.c b/src/libosmo-mgcp/mgcp_codec.c
index 06dcedc..7ab2a17 100644
--- a/src/libosmo-mgcp/mgcp_codec.c
+++ b/src/libosmo-mgcp/mgcp_codec.c
@@ -176,7 +176,7 @@
 			goto error;
 		}
 	} else {
-		strncpy(codec->audio_name, audio_name, sizeof(codec->audio_name));
+		OSMO_STRLCPY_ARRAY(codec->audio_name, audio_name);
 	}
 
 	/* Now we extract the codec subtype name, rate and channels. The latter