Add an assert to avoid a crash when printing the character 0x00.

svn-id: r47945

1 files changed, 1 insertions, 0 deletions

diff --git a/engines/gob/video.cpp b/engines/gob/video.cpp
index 5684a1f443..9e1039f659 100644
--- a/engines/gob/video.cpp
+++ b/engines/gob/video.cpp
@@ -484,6 +484,7 @@ void Video::drawSpriteDouble(SurfaceDesc &source, SurfaceDesc &dest,
 
 void Video::drawLetter(int16 item, int16 x, int16 y, const Font &font,
 		int16 color1, int16 color2, int16 transp, SurfaceDesc &dest) {
+	assert(item != 0x00);
 	_videoDriver->drawLetter((unsigned char)item, x, y, font, color1, color2, transp, dest);
 }