not sure if "wingding.ttf" is right

[todo]

contrib/vpdf/poppler/poppler/GlobalParams.cc

Lines 149 to 154 in 50b0a01

	// TODO: not sure if "wingding.ttf" is right
	{"ZapfDingbats", "d050000l.pfb", "wingding.ttf"},
	// those seem to be frequently accessed by PDF files and I kind of guess
	// which font file do the refer to
	{"Palatino", NULL, "pala.ttf"},

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This issue was generated by todo based on a TODO comment in 50b0a01 when #2 was merged. cc @wawatok.