MFH: r432089
Fix graphics/py-poppler-qt4: fails to build with clang 4.0
PyList_SET_ITEM() is supposed to be void, but as a macro it's an expression and has a pointer value. Clang 4.0 trips on the bogus pointer comparison; given the comparison, it should be PyList_SetItem() which returns -1 on failure.
PR: 216228
Approved by: portmgr blanket, rakuco (mentor)
Approved by: ports-secteam (junovitch), rakuco (mentor)