Remove warnings

[rtobar]

When compiling the latest master on gcc 13.2.0 (Ubuntu 24.04.1) the following warnings were produced, which this PR fixes:

/home/rtobar/scm/git/ClangBuildAnalyzer/src/BuildEvents.cpp:528:29: warning: multi-character character constant [-Wmultichar]
  528 | const uint32_t kFileMagic = 'CBA0';
      |                             ^~~~~~
/home/rtobar/scm/git/ClangBuildAnalyzer/src/BuildEvents.cpp: In function ‘void DebugPrintEvents(const BuildEvents&, const BuildNames&)’:
/home/rtobar/scm/git/ClangBuildAnalyzer/src/BuildEvents.cpp:60:35: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 4 has type ‘long int’ [-Wformat=]
   60 |         printf("%4zi: t=%i t1=%7lld t2=%7lld par=%4i ch=%4zi det=%.*s\n", i, (int) event.type, event.ts, event.ts+event.dur, event.parent.idx, event.children.size(), (int)namesSubstr.size(), namesSubstr.data());
      |                               ~~~~^                                                            ~~~~~~~~
      |                                   |                                                                  |
      |                                   long long int                                                      long int
      |                               %7ld
/home/rtobar/scm/git/ClangBuildAnalyzer/src/BuildEvents.cpp:60:44: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 5 has type ‘long int’ [-Wformat=]
   60 |         printf("%4zi: t=%i t1=%7lld t2=%7lld par=%4i ch=%4zi det=%.*s\n", i, (int) event.type, event.ts, event.ts+event.dur, event.parent.idx, event.children.size(), (int)namesSubstr.size(), namesSubstr.data());
      |                                        ~~~~^                                                             ~~~~~~~~~~~~~~~~~~
      |                                            |                                                                     |
      |                                            long long int                                                         long int
      |                                        %7ld

[aras-p]

The PRId64 is ugly to read, but oh well, that's what C does :( Thanks!

[aras-p]

Uhh looks like my Github actions are out of date, I'll blindly merge this and will try to upgrade those later on.

[rtobar]

Thanks @aras-p for taking the time, much appreciated! Yes, the print format specifiers are a pain for portable C/C++, one day you might be able to port to fmtlib or std::format. Thanks again for the project!