ptrarray: Allow larger chunks for buffer reallocation
ptrarray: Allow larger chunks for buffer reallocation

libimobiledevice-win32/libplist,libimobiledevice/libplist,libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,libimobiledevice/libplist,libimobiledevice-win32/libplist,libimobiledevice/libplist