Fix C-style typecasting in QNX-specific code

[Arech]

C-style typecasting breaks the build due to -Werror=old-style-cast which should remain in place.

Resolves https://github.com/google/benchmark/issues/1707

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[Arech]

complexity_benchmark is failing with a pretty cryptic error to me.

66: BM_Complexity_O_N/2048         D:/a/benchmark/benchmark/test/output_test_helper.cc:116: CheckCase: Check `TC.match_rule != MR_Next' failed. Expected line "BM_Complexity_O_N_RMS                              7 %            25 %    " to match regex "^%rms_name %rms %rms[ ]*$"
66:     actual regex string "^BM_Complexity_O1_RMS [ ]*[0-9]+ % [ ]*[0-9]+ %[ ]*$"
66:     started matching near: BM_Complexity_O_N_RMS                              7 %            25 %    
66:                 11826 ns        15625 ns         1000

https://github.com/google/benchmark/actions/runs/7540451018/job/20525988749?pr=1739#step:6:5222

I don't think it might ever be affected by the PR. Can anyone please suggest what to do?

[dmah42]

complexity_benchmark is failing with a pretty cryptic error to me.

66: BM_Complexity_O_N/2048         D:/a/benchmark/benchmark/test/output_test_helper.cc:116: CheckCase: Check `TC.match_rule != MR_Next' failed. Expected line "BM_Complexity_O_N_RMS                              7 %            25 %    " to match regex "^%rms_name %rms %rms[ ]*$"
66:     actual regex string "^BM_Complexity_O1_RMS [ ]*[0-9]+ % [ ]*[0-9]+ %[ ]*$"
66:     started matching near: BM_Complexity_O_N_RMS                              7 %            25 %    
66:                 11826 ns        15625 ns         1000

https://github.com/google/benchmark/actions/runs/7540451018/job/20525988749?pr=1739#step:6:5222

I don't think it might ever be affected by the PR. Can anyone please suggest what to do?

this is generally flaky, unfortunately. don't worry about it.

[Arech]

@dmah42 ah, so it won't break the merge process then? Ok, then it looks like my role is over here and I presume it should merge automatically. Thanks for a quick review!

[dmah42]

thank you!