edje - don't set font sizes less than 1

this makes evas unhappy and results in noise.

@fix

src/lib/edje/edje_text.c

@@ -367,6 +367,7 @@ _edje_text_recalc_apply(Edje *ed, Edje_Real_Part *ep,
          */
         if (!chosen_desc->text.fit_x) size = sh;
 
+        if (size < 1) size = 1;
         if (inlined_font) efl_text_font_source_set(ep->object, ed->path);
         else efl_text_font_source_set(ep->object, NULL);