Layouting is expensive as it does the format parsing. I see even we do
fomatting when evas_textblock has no text to layout. by putting this simple
check we can delay the layouting till we have some text to layout.
Note: this layouting happens a lot if edje part is textblock.
Am not sure sould we return EINA_FALSE or EINA_TRUE in the case when we don't do layouting. But bottom line is by putting this simple check we will stop doing lot of unnecessary format parsing/ layouting.