[ptx] bugs due to optimization

[Amaury Jacquot]

oops, forgot the backtrace

Amaury Jacquot wrote:
> seems like the string class used to handle filenames doesn't like 
> optimizations, as it fails spectacularly

DEBUG 01:28:19.120514 (PanoramaMemento.cpp:543) loadPTScript(): p line: 
p f1 w10400 h1295 v50  n"TIFF"

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1223719248 (LWP 23580)]
0xb74edbc3 in std::istream::sentry::sentry () from 
//usr/lib/gcc/i686-pc-linux-gnu/3.4.3/libstdc++.so.6
(gdb) bt
#0  0xb74edbc3 in std::istream::sentry::sentry () from 
//usr/lib/gcc/i686-pc-linux-gnu/3.4.3/libstdc++.so.6
#1  0xb74efda2 in std::istream::operator>> () from 
//usr/lib/gcc/i686-pc-linux-gnu/3.4.3/libstdc++.so.6
#2  0x0819e87f in PT::getIntParam<int> (value=@0xbfffdca0, 
line=@0xbfffe044, name=@0xbfffdf84) at Panorama.h:71
#3  0x081965c0 in PT::PanoramaMemento::loadPTScript (this=0xbfffe350, 
i=@0xbfffe518, prefix=@0xbfffe688) at stl_alloc.h:652
#4  0x08100df0 in PT::wxLoadPTProjectCmd::execute (this=0x8849550) at 
wxPanoCommand.h:128