qdoc: Fix regressions in include path handling

Commit 50a172f8 broke the way QDoc parses include paths passed
from qdocconf files by always prepending them with '-I'. While
this ensured that Clang uses them as include paths, QDoc no
longer found module headers local to the documentation project
as '-I/path/to/module' is never a valid file system path.

This change fixes the issue and removes duplicated and
unnecessary code.

Fixes: QTBUG-76279
Change-Id: I7006000ec6be823afd10bae59eb88780ccf32b23
Reviewed-by: Martin Smith <martin.smith@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
 

0 files changed, 0 insertions, 0 deletions