Linebreak should not apply for leading whitespace #405

Job	Run time
macos (tiny)	1m 17s
windows (HUGE, msvc, no, no, x64, stable)	7m 55s
macos (normal)	9m 4s
linux (tiny, clang, native)	1m 54s
windows (HUGE, mingw, yes, yes, x86, stable, yes)	13m 20s
macos (huge)	15m 37s
linux (tiny, gcc, native)	1m 52s
windows (HUGE, msvc, no, yes, x86)	9m 6s
linux (normal, clang, native)	6m 48s
windows (HUGE, mingw, yes, no, x64, yes)	12m 22s
linux (normal, gcc, native)	5m 33s
windows (NORMAL, msvc, yes, no, x86)	7m 12s
linux (huge, clang, native)	8m 57s
windows (NORMAL, mingw, no, yes, x64)	10m 52s
linux (huge, gcc, native)	15m 4s
windows (TINY, msvc, yes, yes, x64)	2m 47s
linux (tiny, clang, nogui)	1m 28s
windows (TINY, mingw, no, no, x86)	3m 35s
linux (tiny, gcc, nogui)	1m 36s
linux (normal, gcc, i386, ./src/shadow)	8m 54s
linux (huge, gcc, uchar, testgui, true, dynamic)	11m 45s
linux (huge, clang, asan, 5.1)	20m 29s
linux (huge, gcc, unittests, true)	2m 38s
linux (normal, gcc, vimtags)	2m 10s
	3h 2m 15s

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