fix some a/an typos

Signed-off-by: Lou Logan <lou@lrcd.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/libavutil/avstring.h b/libavutil/avstring.h
index 15b04babef..dd2876990f 100644
--- a/libavutil/avstring.h
+++ b/libavutil/avstring.h
@@ -156,7 +156,7 @@ static inline size_t av_strnlen(const char *s, size_t len)
 char *av_asprintf(const char *fmt, ...) av_printf_format(1, 2);
 
 /**
- * Convert a number to a av_malloced string.
+ * Convert a number to an av_malloced string.
  */
 char *av_d2str(double d);