[lldb] Fix formatted log statement

[keith]

Summary

Previously this would output literally without replacements

lldb/source/Core/Module.cpp

void Module::RegisterXcodeSDK(llvm::StringRef sdk_name, llvm::StringRef sysroot) {
   if (!m_source_mappings.Replace(sysroot, sdk_path, true))
     // In the general case, however, append it to the list.
     m_source_mappings.Append(sysroot, sdk_path, false);
 }
 
 bool Module::MergeArchitecture(const ArchSpec &arch_spec) {
   if (!arch_spec.IsValid())
     return false;
-  LLDB_LOG(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT | LIBLLDB_LOG_MODULES),
+  LLDB_LOGF(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT | LIBLLDB_LOG_MODULES),
             "module has arch %s, merging/replacing with arch %s",
             m_arch.GetTriple().getTriple().c_str(),
             arch_spec.GetTriple().getTriple().c_str());
   if (!m_arch.IsCompatibleMatch(arch_spec)) {
     // The new architecture is different, we just need to replace it.
     return SetArchitecture(arch_spec);
   }
 
   // Merge bits from arch_spec into "merged_arch" and set our architecture.
   ArchSpec merged_arch(m_arch);
   merged_arch.MergeFrom(arch_spec);