Fixed a bug where Wave emitted the found C++ comments in --preserve mode even if these were found inside of disabled #if/#endif blocks.

[SVN r28957]

libs/wave

@@ -1 +1 @@
-Subproject commit 54c512ccfdd68c07b276095bc742e69f5e0e9218
+Subproject commit c86e4352bff2d1c8679b52fe45c706387d4e2a54