add missing "break" statement #17

Job	Run time
cppcheck	17m 42s
code formatting check	16s
min features with gcc	3m 19s
min features with g++	2m 56s
min features with clang	2m 51s
max features with gcc	4m 43s
max features with g++	2m 56s
max features with clang	4m 14s
max features with gcc and DEBUG	3m 5s
max features with gcc for 32-bit arch (legacy OS)	2m 0s
max features with g++ for 32-bit arch (legacy OS)	1m 37s
max features with clang for 32-bit arch (legacy OS)	1m 45s
	47m 24s

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