The preprocessor used in QOpenGLShaderProgram to help with determining
where it should add the #line and other #define directives is broken
when parsing the standard Qt Project copyright header.
In a multiline comment if the preprocessor encounters repeated '*'
characters when in a multiline comment, it toggles the state between
MultiLineComment and CommentEnding. This is wrong as every asterisk is
potentially the one before the closing '/' of a multiline comment.
This change fixes this by only going back to the MultiLineComment when
in the CommentEnding state if the character is not another '*'.
Task-number: QTBUG-43240
Change-Id: I114e933026ba5de1c23f3e0399613def59f44961
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>