David Spickett b1d75fe48c [lldb][test] Fix cast dropping const warnin in TestBreakpointSetCallback.cpp ...

When building with gcc I get this warning:
```
<...>TestBreakpointSetCallback.cpp:58:25: warning: cast from type ‘const char*’ to type ‘void*’ casts away qualifiers [-Wcast-qual]
   58 |   void *baton = (void *)"hello";
      |                         ^~~~~~~
```

Use the address of a mutable global variable instead. All we care about
is that the address passed as the baton is the same one we get later.

2024-08-19 15:16:04 +00:00

..

CMakeLists.txt

…

TestBreakpointSetCallback.cpp

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