Use of uninitialised value in msCopySymbol()

[dmorissette]

Running valgrind on the 'testcopy' program (compile it using make testcopy) reported:

==22437== Use of uninitialised value of size 8
==22437==    at 0x808396F: msCopySymbol (mapsymbol.c:950)
==22437==    by 0x8083CC8: msCopySymbolSet (mapsymbol.c:1013)
==22437==    by 0x807279C: msCopyMap (mapcopy.c:888)
==22437==    by 0x804CB92: main (testcopy.c:59)

[dmorissette]

This was caused by the loop that copies points[] in msCopySymbol() that should copy only src->numpoints points instead of attempting to copy MS_MAXVECTORPOINTS points.

The same issue was present in the loop that copies symbol patterns in the same fuction.

Fixed in r6442.