Fix for bug 15252902 native crash in Minikin

This is a fix for bug 15252902 "Crash observed on keep launch or
existing youtube app after playing video". It was doing the test for a
null font after trying to resolve the font in a cache, which caused a
crash when there was no font for the run. This patch just tests before
cache lookup.

Change-Id: Iee41f7ce6b69cb09438462b6aaa916f242da7b77
1 file changed
tree: 958a4b94155bc2ad64a92d6214e8b27cf96f5288
  1. include/
  2. libs/
  3. sample/