Fixed problem introduced by r3138 in sceUtilityOsk: avoid truncation of entered text.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3139 4ab978e6-3352-0410-996c-0b42db0051c8
Improved compatibility of sceFontOpenUserFile: return correct error code when the file does not exit. Tested using "Font Test" application.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3140 4ab978e6-3352-0410-996c-0b42db0051c8