ticket:10147: fix header typo


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@33679 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10143: set to null was a mistake.  fGlyphStorage is null when theres already an error (and the error code is set).


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@33680 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10169: Fix redefinition of macro on os390 in simplethread test code

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk/source@33681 251d0590-4201-4cf1-90de-194747b24ca1