Fix perl compilation errors #324

Job	Run time
macos (tiny)	1m 49s
macos (normal)	7m 50s
macos (huge)	16m 23s
windows (HUGE, msvc, no, no, x64)	8m 44s
windows (HUGE, mingw, yes, yes, x86, yes)	15m 43s
windows (HUGE, msvc, no, yes, x86)	10m 59s
windows (HUGE, mingw, yes, no, x64, yes)	14m 10s
windows (NORMAL, msvc, yes, no, x86)	8m 28s
windows (NORMAL, mingw, no, yes, x64)	8m 5s
windows (TINY, msvc, yes, yes, x64)	3m 10s
windows (TINY, mingw, no, no, x86)	4m 23s
linux (tiny, clang, none, lua5.4)	2m 16s
linux (tiny, gcc, none, lua5.4)	1m 19s
linux (normal, clang, none, lua5.4)	8m 7s
linux (normal, gcc, none, lua5.4)	8m 7s
linux (huge, clang, none, lua5.4)	8m 37s
linux (huge, gcc, none, lua5.4)	14m 0s
linux (tiny, clang, nogui)	1m 51s
linux (tiny, gcc, nogui)	1m 38s
linux (huge, gcc, testgui, lua5.4, true, true)	10m 49s
linux (huge, clang, asan, lua5.1)	18m 51s
linux (huge, gcc, unittests, lua5.4, true)	3m 15s
linux (normal, gcc, vimtags)	1m 26s
	3h 0m 0s

Provide feedback