Silence some warnings when building the Python bindings:
sigrok/core/classes_wrap.cpp: In function ‘PyObject* _wrap_new_OutputFormatMap(PyObject*, PyObject*)’:
sigrok/core/classes_wrap.cpp:5232:4: warning: ‘argv[0]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
res = SWIG_ConvertPtr(obj,(void**)&p,swig::type_info<map_type>(),0);
^
sigrok/core/classes_wrap.cpp:14383:13: note: ‘argv[0]’ was declared here
PyObject *argv[2];
^
sigrok/core/classes_wrap.cpp: In function ‘PyObject* _wrap_new_ChannelGroupMap(PyObject*, PyObject*)’:
sigrok/core/classes_wrap.cpp:5232:4: warning: ‘argv[0]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
res = SWIG_ConvertPtr(obj,(void**)&p,swig::type_info<map_type>(),0);
^
sigrok/core/classes_wrap.cpp:23356:13: note: ‘argv[0]’ was declared here
PyObject *argv[2];
^
We add -Wno-uninitialized since the warnings are harmless and we really
don't care about them in the generated classes_wrap.cpp.
This fixes parts of #417.
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