This patch completes change 2edfcb50fb569fa8f95a576a12c787c89555f2d0.

--- //depot/projects/proxycrypto/head/deps/freerdp/libfreerdp-cache/glyph.c	2012-01-02 23:31:08.000000000 0100
+++ /root/p4/proxycrypto/deps/freerdp/libfreerdp-cache/glyph.c	2012-01-02 23:31:08.000000000 0100
@@ -81,7 +81,7 @@
 	graphics = context->graphics;
 	glyph_cache = context->cache->glyph;
 
-	if (opWidth > 1)
+	if (opWidth > 0 && opHeight > 0)
 		Glyph_BeginDraw(context, opX, opY, opWidth, opHeight, bgcolor, fgcolor);
 	else
 		Glyph_BeginDraw(context, 0, 0, 0, 0, bgcolor, fgcolor);