utils: Fix incorrect gettimeofday() return value check #5212
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This PR corrects the return value check for gettimeofday() in utils/timer/main.c to align with the POSIX specification. According to POSIX, gettimeofday() returns 0 on success, while any nonzero value indicates failure. Therefore, checking specifically for -1 is incorrect.
The gettimeofday() function shall return 0 and no value shall be reserved to indicate an error
This pull request is in reference to #5204