[SDL] TTF_Init() returns 0 on success, so don't throw an exception if initialization succeeds.
[SDL] TTF_Init() returns 0 on success, so don't throw an exception if
initialization succeeds.

examples/sdl/blue_font.pir now prints something, though the color is wrong.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@24182 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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