build

Fix -Wshorten-64-to-32 warning on Android NDK when targeting x86 #208

Job	Run time
windows (Win32, standard)	1m 4s
ubuntu (g++, standard)	1s
windows (Win32, PUGIXML_WCHAR_MODE)	1m 0s
ubuntu (g++, PUGIXML_WCHAR_MODE)	24s
windows (Win32, PUGIXML_COMPACT)	1m 17s
ubuntu (g++, PUGIXML_COMPACT)	24s
windows (Win32, PUGIXML_NO_EXCEPTIONS)	1m 11s
ubuntu (g++, PUGIXML_NO_EXCEPTIONS)	21s
windows (x64, standard)	1m 43s
windows (x64, PUGIXML_WCHAR_MODE)	1m 0s
ubuntu (clang++, standard)	23s
windows (x64, PUGIXML_COMPACT)	1m 20s
ubuntu (clang++, PUGIXML_WCHAR_MODE)	23s
windows (x64, PUGIXML_NO_EXCEPTIONS)	1m 1s
ubuntu (clang++, PUGIXML_COMPACT)	27s
ubuntu (clang++, PUGIXML_NO_EXCEPTIONS)	21s
macos (clang++, standard)	35s
macos (clang++, PUGIXML_WCHAR_MODE)	37s
macos (clang++, PUGIXML_COMPACT)	32s
macos (clang++, PUGIXML_NO_EXCEPTIONS)	31s
	14m 35s

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