[lldb] Qualify auto in the lldb driver (NFC)

The LLVM coding guidelines say to "[u]se auto & for values and auto *
for pointers unless you need to make a copy."

Author: JDevlieghere

lldb/tools/driver/Driver.cpp

@@ -206,7 +206,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   }
 
   if (auto *arg = args.getLastArg(OPT_core)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     SBFileSpec file(arg_value);
     if (!file.Exists()) {
       error.SetErrorStringWithFormat(
@@ -232,7 +232,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   }
 
   if (auto *arg = args.getLastArg(OPT_file)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     SBFileSpec file(arg_value);
     if (file.Exists()) {
       m_option_data.m_args.emplace_back(arg_value);
@@ -249,7 +249,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   }
 
   if (auto *arg = args.getLastArg(OPT_arch)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     if (!lldb::SBDebugger::SetDefaultArchitecture(arg_value)) {
       error.SetErrorStringWithFormat(
           "invalid architecture in the -a or --arch option: '%s'", arg_value);
@@ -258,7 +258,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   }
 
   if (auto *arg = args.getLastArg(OPT_script_language)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     m_debugger.SetScriptLanguage(m_debugger.GetScriptingLanguage(arg_value));
   }
 
@@ -267,7 +267,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   }
 
   if (auto *arg = args.getLastArg(OPT_attach_name)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     m_option_data.m_process_name = arg_value;
   }
 
@@ -276,7 +276,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   }
 
   if (auto *arg = args.getLastArg(OPT_attach_pid)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     char *remainder;
     m_option_data.m_process_pid = strtol(arg_value, &remainder, 0);
     if (remainder == arg_value || *remainder != '\0') {
@@ -287,7 +287,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   }
 
   if (auto *arg = args.getLastArg(OPT_repl_language)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     m_option_data.m_repl_lang =
         SBLanguageRuntime::GetLanguageTypeFromString(arg_value);
     if (m_option_data.m_repl_lang == eLanguageTypeUnknown) {
@@ -304,7 +304,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
 
   if (auto *arg = args.getLastArg(OPT_repl_)) {
     m_option_data.m_repl = true;
-    if (auto arg_value = arg->getValue())
+    if (auto *arg_value = arg->getValue())
       m_option_data.m_repl_options = arg_value;
   }
 
@@ -313,7 +313,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
   for (auto *arg : args.filtered(OPT_source_on_crash, OPT_one_line_on_crash,
                                  OPT_source, OPT_source_before_file,
                                  OPT_one_line, OPT_one_line_before_file)) {
-    auto arg_value = arg->getValue();
+    auto *arg_value = arg->getValue();
     if (arg->getOption().matches(OPT_source_on_crash)) {
       m_option_data.AddInitialCommand(arg_value, eCommandPlacementAfterCrash,
                                       true, error);
@@ -365,7 +365,7 @@ SBError Driver::ProcessArgs(const opt::InputArgList &args, bool &exiting) {
 
     // Any argument following -- is an argument for the inferior.
     if (auto *arg = args.getLastArgNoClaim(OPT_REM)) {
-      for (auto value : arg->getValues())
+      for (auto *value : arg->getValues())
         m_option_data.m_args.emplace_back(value);
     }
   } else if (args.getLastArgNoClaim() != nullptr) {