lib: add comment in utf8_to_utf32_stream()

The logic of utf8_to_utf32_stream() is not easy to understand.
Add a comment.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

diff --git a/lib/charset.c b/lib/charset.c
index 89057ef..2b43175 100644 (file)
--- a/lib/charset.c
+++ b/lib/charset.c
@@ -570,6 +570,10 @@ int utf8_to_utf32_stream(u8 c, char *buffer)
                }
                if (pos == end)
                        return 0;
+               /*
+                * Appending the byte lead to an invalid UTF-8 byte sequence.
+                * Consider it as the start of a new code sequence.
+                */
                *buffer = 0;
        }
 }