use Rzlist methods. fixes rizinorg/rz-ghidra#337

[treseco]

Fixes compile errors resulting from the renaming of rz_list_iter_t members in rizin dev branch here. New version calls methods instead of accessing members.

[XVilka]

The failed compilation of the Cutter plugin is because Cutter needs to be updated. Good to merge as is.

root/cutter/src/core/RizinCpp.h:58:67: error: ‘RzListIter’ {aka ‘struct rz_list_iter_t’} has no member named ‘data’
#9 32.52    58 |         for (it = list->head; it && ((x = static_cast<type *>(it->data))); it = it->n)
#9 32.52       |                                                                   ^~~~
#9 32.52 /root/cutter/src/core/Cutter.cpp:2554:5: note: in expansion of macro ‘CutterRzListForeach’
#9 32.52  2554 |     CutterRzListForeach (core->dbg->plugins, iter, RzDebugPlugin, plugin) {
#9 32.52       |     ^~~~~~~~~~~~~~~~~~~
#9 32.52 /root/cutter/src/core/RizinCpp.h:58:85: error: ‘RzListIter’ {aka ‘struct rz_list_iter_t’} has no member named ‘n’
#9 32.52    58 |         for (it = list->head; it && ((x = static_cast<type *>(it->data))); it = it->n)
#9 32.52       |                                                                                     ^
#9 32.52 /root/cutter/src/core/Cutter.cpp:2554:5: note: in expansion of macro ‘CutterRzListForeach’
#9 32.52  2554 |     CutterRzListForeach (core->dbg->plugins, iter, RzDebugPlugin, plugin) {
#9 32.52       |     ^~~~~~~~~~~~~~~~~~~
#9 32.52 /root/cutter/src/core/Cutter.cpp: In member function ‘QList<ProcessDescription> CutterCore::getProcessThreads(int)’:
#9 32.52 /root/cutter/src/core/RizinCpp.h:58:67: error: ‘RzListIter’ {aka ‘struct rz_list_iter_t’} has no member named ‘data’
#9 32.52    58 |         for (it = list->head; it && ((x = static_cast<type *>(it->data))); it = it->n)
#9 32.52       |                                                                   ^~~~
#9 32.52 /root/cutter/src/core/Cutter.cpp:2853:5: note: in expansion of macro ‘CutterRzListForeach’
#9 32.52  2853 |     CutterRzListForeach (list, iter, RzDebugPid, p) {
#9 32.52       |     ^~~~~~~~~~~~~~~~~~~