Fixup -Wshadow for setSignatureType() param

This amends 4815f804bb55cc7e8f1ae301c5e67440f1a4a0dd.
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build

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build_android

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build_clang_libcpp

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build_clazy

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build_mingw64_fedora

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build_ubuntu_16_04

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  Document
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cpp_docs

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glib_docs

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qt5_docs

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  Publish
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trigger_pages

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