message: [target] Fix typo and give bool a default value
  This addresses Stella's review feedback in D51859.
diff: @@ -1446,20 +1446,20 @@ void Target::SetExecutableModule(ModuleSP &executable_sp,
  FileSpecList dependent_files;
  ObjectFile *executable_objfile = executable_sp->GetObjectFile();
  - bool load_dependens;
  + bool load_dependents = true;
  switch (load_dependent_files) {
  case eLoadDependentsDefault:
  - load_dependens = executable_sp->IsExecutable();
  + load_dependents = executable_sp->IsExecutable();
  break;
  case eLoadDependentsYes:
  - load_dependens = true;
  + load_dependents = true;
  break;
  case eLoadDependentsNo:
  - load_dependens = false;
  + load_dependents = false;
  break;
  }
  - if (executable_objfile && load_dependens) {
  + if (executable_objfile && load_dependents) {
  executable_objfile->GetDependentModules(dependent_files);
  for (uint32_t i = 0; i < dependent_files.GetSize(); i++) {
  FileSpec dependent_file_spec(
  