Fix Incomplete styler.xml crashes Notepad++ issue #12

Job	Run time
build_windows_cmake (Release, x64, amd64)	6m 0s
build_windows_msys2 (Release, x86_64)	10m 46s
build_windows (Release, x64)	5m 37s
build_windows_msys2 (Release, i686)	5m 19s
build_windows (Release, Win32)	3m 9s
build_windows_msys2 (Debug, x86_64)	4m 51s
build_windows (Release, ARM64)	6m 17s
build_windows_msys2 (Debug, i686)	7m 48s
build_windows (Debug, x64)	13m 56s
build_windows (Debug, Win32)	6m 2s
build_windows (Debug, ARM64)	3m 21s
	1h 13m 6s

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