[libpng16] Change "n bit" to "n-bit" in comments.

1 files changed, 1 insertions, 1 deletions

diff --git a/pngwio.c b/pngwio.c
index 0a40948aa..db76e6b8d 100644
--- a/pngwio.c
+++ b/pngwio.c
@@ -26,7 +26,7 @@
  * writes to a file pointer.  Note that this routine sometimes gets called
  * with very small lengths, so you should implement some kind of simple
  * buffering if you are using unbuffered writes.  This should never be asked
- * to write more than 64K on a 16 bit machine.
+ * to write more than 64K on a 16-bit machine.
  */
 
 void /* PRIVATE */