Rotate path ar 90 dg. CW or CCW crash

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Info:
- Inkscape vesion: 0.91pre2 r13516
- OS: Windows-7 64 bits
- Test case file: inkscape=rotate-error.svg

Steps to reproduce:
- Open the attached file
- Select any one of the two paths (square or triangle)
- Press the "Rotate 90dg CW" or "Rotate 90dg CCW" button or menu item.
- The application crashes with a "Microsoft Visual C++ Runtime Library" error.

Extra info which may be relevant:
- Rotating by an arbitrary angle works as expected (workaround).
- The original file was created with a different Inkscape version.
- If a new file is created and the objects copied and pasted onto the new file the problem do not occur (possible workaround).
- It was observed that with other files created with older versions the rotation center for 90 degree rotations do not coincides with the Transform rotation center.

[su_v (suv-lp)]

On OS X 10.7.5, not reproduced with 0.91pre2 r13645 and 0.91+devel r13729.

Based on tests with archived builds:
- not reproduced with rev <= 13511
- reproduced with rev >= 13512 and rev <= 13532,
- not reproduced with rev >= 13536;
it seems that the crash (regression) was fixed in revision 13534:
<http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/13534>

Other reports about the same regression introduced in rev 13512: bug #1360953, bug #1360946