How to prevent adding trailling new lines for inline elements when using NO_P_TAGS_USE_BR

[anqianqianqi]

When I render with HtmlRenderer.NO_P_TAGS_USE_BR set to true,
there will be 2 trailing new lines added to the element.
Examples:
input: **bold**
output: <strong>bold</strong><br /><br />\n

However it does not happen to block level elements.
Examples:
input: # Headline
output: <h1>Headline</h1>\n
How could I remove the trailing new lines for inline elements to have it behave consistently as the block level elements?