merge bug-080a28104e: Fixes crash caused by nil UTType when user prov… #651

Job	Run time
build (gcc)	1m 43s
build (gcc, CFLAGS=-DTK_NO_DEPRECATED=1)	2m 8s
test (gcc)	4m 3s
build (gcc, --disable-shared)	1m 37s
test (gcc, --disable-xft)	4m 43s
test (gcc, --enable-symbols)	3m 36s
build (gcc, --disable-xft)	1m 38s
build (gcc, --disable-xss)	1m 39s
build (gcc, --enable-symbols)	1m 15s
build (clang)	1m 52s
build (clang, CFLAGS=-DTK_NO_DEPRECATED=1)	1m 59s
build (clang, --disable-shared)	1m 51s
build (clang, --disable-xft)	1m 47s
build (clang, --disable-xss)	1m 52s
build (clang, --enable-symbols)	1m 28s
	33m 11s

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