evas_font_query: fixed the wrong arrangement when white-char is on wrapping point

evas_font_query: fixed the wrong arrangement when white-char is on wrapping point

Current textblock does not have proper logic for processing line wrapping when -
1. white-char is on wrapping point
2. white-char is drawn with different font from the characters which are before and after it

So, this change would follow the old logic which assumes the font for white-character is
always cached by the current processing font.

After making proper changes in textblock, then this patch can be reverted.

@tizen_fix

Change-Id: I18f782402dafe64358c9094566ce41f96b8cbb84