[lld,NFC] Fix stale comments related to config->

Author: MaskRay

lld/COFF/Driver.h

@@ -112,7 +112,7 @@ class LinkerDriver {
   void detectWinSysRoot(const llvm::opt::InputArgList &args);
 
   // Adds various search paths based on the sysroot.  Must only be called once
-  // config->machine has been set.
+  // config.machine has been set.
   void addWinSysRootLibSearchPaths();
 
   // Symbol names are mangled by prepending "_" on x86.

lld/ELF/SymbolTable.cpp

@@ -318,7 +318,7 @@ void SymbolTable::scanVersionScript() {
     // script with `global: *` are used.
     //
     // '--retain-symbol-file' adds a "*" pattern to
-    // 'config->versionDefinitions[VER_NDX_LOCAL].nonLocalPatterns', see
+    // 'versionDefinitions[VER_NDX_LOCAL].nonLocalPatterns', see
     // 'readConfigs()' in 'Driver.cpp'. Note that it is not '.localPatterns',
     // and may seem counterintuitive, but still works as expected. Here we can
     // exploit that and skip analyzing the pattern added for this option.