In the case get_bbappend_path returns None (could not find the layer
containing the recipe) the error message tries to print the recipefile,
but it is not defined. Fix it.
(From OE-Core rev: 234111fb67ffbcc5492cb0cd96db25ed8f5acea0)
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>