Use llvm::reverse to get a reverse range.

llvm-svn: 287252
diff --git a/lld/ELF/SymbolTable.cpp b/lld/ELF/SymbolTable.cpp
index d7e7a94..f8b8a63 100644
--- a/lld/ELF/SymbolTable.cpp
+++ b/lld/ELF/SymbolTable.cpp
@@ -21,6 +21,7 @@
 #include "Memory.h"
 #include "SymbolListFile.h"
 #include "Symbols.h"
+#include "llvm/ADT/STLExtras.h"
 
 using namespace llvm;
 using namespace llvm::object;
@@ -723,9 +724,9 @@
   // we iterate over the definitions in the reverse order.
   for (SymbolVersion &Ver : Config->VersionScriptLocals)
     assignWildcardVersion(Ver, VER_NDX_LOCAL);
-  for (size_t I = Config->VersionDefinitions.size() - 1; I != (size_t)-1; --I)
-    for (SymbolVersion &Ver : Config->VersionDefinitions[I].Globals)
-      assignWildcardVersion(Ver, Config->VersionDefinitions[I].Id);
+  for (VersionDefinition &V : llvm::reverse(Config->VersionDefinitions))
+    for (SymbolVersion &Ver : V.Globals)
+      assignWildcardVersion(Ver, V.Id);
 }
 
 template class elf::SymbolTable<ELF32LE>;