diff --git a/doc/examples/decoding_encoding.c b/doc/examples/decoding_encoding.c
index ae1057c010..976b611cc1 100644
--- a/doc/examples/decoding_encoding.c
+++ b/doc/examples/decoding_encoding.c
@@ -79,7 +79,7 @@ static int select_channel_layout(AVCodec *codec)
 {
     const uint64_t *p;
     uint64_t best_ch_layout = 0;
-    int best_nb_channells   = 0;
+    int best_nb_channels   = 0;
 
     if (!codec->channel_layouts)
         return AV_CH_LAYOUT_STEREO;
@@ -88,9 +88,9 @@ static int select_channel_layout(AVCodec *codec)
     while (*p) {
         int nb_channels = av_get_channel_layout_nb_channels(*p);
 
-        if (nb_channels > best_nb_channells) {
+        if (nb_channels > best_nb_channels) {
             best_ch_layout    = *p;
-            best_nb_channells = nb_channels;
+            best_nb_channels = nb_channels;
         }
         p++;
     }
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 17139acb3f..688a61556c 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -2327,7 +2327,8 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data,
              st->codec->codec_id == AV_CODEC_ID_ATRAC3) &&
              st->codec->block_align && track->audio.sub_packet_size) {
 
-            res = matroska_parse_rm_audio(matroska, track, st, data, size,
+            res = matroska_parse_rm_audio(matroska, track, st, data,
+                                          lace_size[n],
                                           timecode, pos);
             if (res)
                 goto end;
diff --git a/libavutil/opt.c b/libavutil/opt.c
index ab73913a39..0e7a3a85bb 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -1032,9 +1032,16 @@ static int parse_key_value_pair(void *ctx, const char **buf,
     char *val;
     int ret;
 
+    if (!key)
+        return AVERROR(ENOMEM);
+
     if (*key && strspn(*buf, key_val_sep)) {
         (*buf)++;
         val = av_get_token(buf, pairs_sep);
+        if (!val) {
+            av_freep(&key);
+            return AVERROR(ENOMEM);
+        }
     } else {
         av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
         av_free(key);