[LLDB][NFC] Fix variable casing issue (llvm#161691)

Fixes some casing mistakes I added in llvm#161581

Author: Jlalond

lldb/source/API/SBTarget.cpp

@@ -255,7 +255,7 @@ SBProcess SBTarget::LoadCore(const char *core_file, lldb::SBError &error) {
     ProcessSP process_sp(target_sp->CreateProcess(
         target_sp->GetDebugger().GetListener(), "", &filespec, false));
     if (process_sp) {
-      ElapsedTime loadCoreTime(target_sp->GetStatistics().GetLoadCoreTime());
+      ElapsedTime load_core_time(target_sp->GetStatistics().GetLoadCoreTime());
       error.SetError(process_sp->LoadCore());
       if (error.Success())
         sb_process.SetSP(process_sp);

lldb/source/Commands/CommandObjectTarget.cpp

@@ -419,7 +419,7 @@ class CommandObjectTargetCreate : public CommandObjectParsed {
           // Seems weird that we Launch a core file, but that is what we
           // do!
           {
-            ElapsedTime loadCoreTime(
+            ElapsedTime load_core_time(
                 target_sp->GetStatistics().GetLoadCoreTime());
             error = process_sp->LoadCore();
           }