uic3 -extract generates invalid xpm files

If a Qt3 .ui file contained a large image encoded as XPM.GZ, the extraction done by uic3 -extract leads to an xpm file where long lines are splitted over multiple lines. However, no XPM reader out there supports this: gimp breaks on it, xemacs breaks on it, qt3 breaks on it, and qt4 breaks on it too

The bug is in src/tools/uic/cpp/cppwriteicondata.cpp line 148, the block saying
if (column++ >= 511 && inQuote)

{ output << "\"\n\""; // be nice with MSVC & Co. column = 1; }

This might fix compilation with msvc, but at the expense of making the xpm file uneditable by any image editing tool.
I think this block should be removed (presumably newer versions of MSVC accept long lines?).

After removing the block, I get valid xpm files.

Can't provide a testcase in a public bug tracker (customer files), but surely you have a testcase from when this code was added.