Fixed: FR_TextHeight was used to calculate the height of the busy mod…

…e font

  even though it factors in properties like leading. This value is used to
  draw the busy log line-by-line, so instead call FR_SingleLineHeight

doomsday/engine/portable/src/con_busy.c

@@ -285,7 +285,7 @@ static void Con_BusyLoadTextures(void)
             busyFont = Fonts_ToIndex(font);
             FR_SetFont(busyFont);
             FR_LoadDefaultAttrib();
-            busyFontHgt = FR_TextHeight("A");
+            busyFontHgt = FR_SingleLineHeight("Busy");
         }
     }
 }