Add 0 as valid g_obj_wait timeout instead of having it be equivalent … #1694

Job	Run time
code formatting check	14s
cppcheck	18m 3s
min features with gcc	2m 13s
min features with g++	2m 18s
min features with clang	1m 37s
max features with gcc	2m 31s
max features with g++	2m 45s
max features with clang	4m 16s
max features with gcc and DEBUG	3m 4s
max features with gcc for 32-bit arch (legacy OS)	2m 2s
max features with g++ for 32-bit arch (legacy OS)	1m 58s
max features with clang for 32-bit arch (legacy OS)	1m 55s
	42m 56s

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