Fix an issue with use of uninitialized memory in trefer_deprec.c test #4396

Job	Run time
Windows MSVC CMake REL TS	8m 2s
Windows MSVC CMake DBG TS	7m 26s
Windows MSVC CMake REL	19m 37s
Windows MSVC CMake DBG	19m 56s
Ubuntu gcc CMake REL TS	5m 4s
Ubuntu gcc CMake DBG TS	3m 27s
Ubuntu gcc CMake REL	8m 50s
Ubuntu gcc CMake DBG	9m 20s
Ubuntu gcc Autotools REL TS	7m 32s
Ubuntu gcc Autotools DBG TS	6m 53s
Ubuntu gcc Autotools REL	19m 22s
Ubuntu gcc Autotools DBG	17m 0s
Ubuntu gcc Autotools parallel (build only) REL TS	6m 12s
Ubuntu gcc Autotools parallel (build only) DBG TS	5m 23s
Ubuntu gcc Autotools parallel (build only) REL	9m 14s
Ubuntu gcc Autotools parallel (build only) DBG	7m 57s
MacOS Clang CMake REL TS	3m 42s
MacOS Clang CMake DBG TS	2m 40s
MacOS Clang CMake REL	7m 32s
MacOS Clang CMake DBG	8m 46s
Ubuntu gcc Autotools v1.6 default API (build only) DBG	10m 39s
Ubuntu gcc Autotools v1.8 default API (build only) DBG	10m 52s
Ubuntu gcc Autotools v1.10 default API (build only) DBG	9m 21s
Ubuntu gcc Autotools v1.12 default API (build only) DBG	10m 24s
Ubuntu gcc Autotools v1.14 default API (build only) DBG	11m 36s
Ubuntu gcc Autotools no deprecated symbols (build only) DBG	11m 2s
Ubuntu gcc Autotools -Werror (build only) DBG	7m 12s
Ubuntu gcc Autotools -Werror (build only) REL	8m 31s
Ubuntu gcc Autotools parallel -Werror (build only) DBG	6m 29s
Ubuntu gcc Autotools parallel -Werror (build only) REL	7m 36s
	4h 37m 37s

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