This fixes a crash with following error:
```
Traceback (most recent call last):
File "/usr/local/share/Cppcheck/addons/runaddon.py", line 8, in <module>
runpy.run_path(addon, run_name='__main__')
File "<frozen runpy>", line 291, in run_path
File "<frozen runpy>", line 98, in _run_module_code
File "<frozen runpy>", line 88, in _run_code
File "/usr/local/share/Cppcheck/addons/misra.py", line 4737, in <module>
main()
File "/usr/local/share/Cppcheck/addons/misra.py", line 4679, in main
checker.parseDump(item)
File "/usr/local/share/Cppcheck/addons/misra.py", line 4335, in parseDump
self.executeCheck(902, self.misra_9_2, cfg)
File "/usr/local/share/Cppcheck/addons/misra.py", line 4246, in executeCheck
check_function(*args)
File "/usr/local/share/Cppcheck/addons/misra.py", line 2104, in misra_9_2
misra_9.misra_9_x(self, data, 902)
File "/usr/local/share/Cppcheck/addons/misra_9.py", line 414, in misra_9_x
parser.parseInitializer(ed, eq.astOperand2)
File "/usr/local/share/Cppcheck/addons/misra_9.py", line 320, in parseInitializer
child = self.root.getChildByValueElement(self.ed)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'getChildByValueElement'
```
A minimal example and testcase is added.
The extra check for nextChild seems to fix it, however i did not read
the whole codebase, so maybe this creates other issues.
---------
Co-authored-by: Tim Blume <tbl@sevenstax-intern.de>
This fixes the crash on with struct fields containing unknown types
reported on the forum:
https://sourceforge.net/p/cppcheck/discussion/general/thread/d64551cc55/#5f0f
The suggested patch doesn't handle the cases when there are struct
fields with arrays containing unknown types. So the addon will not
generate warnings in these cases. The problem is that Cppcheck doesn't
generate valueType-pointer information for unknown types in the dump
file. When adding this in symboldatabase.cpp, MISRA addon will generate
a lot of false positives because we depend on the null value of
valueType.
So I suppose it better to left this as is, to don't break the addon for
such rare cases.
