Update uf_plugin.c #351

Job	Run time
ubuntu-latest\|debug\|--enable-mcsat\|CC=gcc CXX=g++	8m 47s
ubuntu-latest\|debug\|--enable-mcsat\|CC=clang CXX=clang++	9m 15s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=gcc CXX=g++	4m 15s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=clang CXX=clang++	4m 29s
ubuntu-latest\|release\|--enable-mcsat\|CC=gcc CXX=g++	5m 32s
ubuntu-latest\|release\|--enable-mcsat\|CC=clang CXX=clang++	5m 59s
ubuntu-latest\|release\|--enable-thread-safety\|CC=gcc CXX=g++	2m 31s
ubuntu-latest\|release\|--enable-thread-safety\|CC=clang CXX=clang++	2m 46s
ubuntu-latest\|gcov\|--enable-mcsat\|CC=gcc CXX=g++	8m 6s
ubuntu-latest\|debug\|--enable-thread-safety --enable-mcsat\|CC=gcc CXX=g++	8m 48s
	1h 0m 28s

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