Attemp to fix linux build bot after r278911 ("[ELF] - linkerscript AT keyword (in output section description) implemented.")

http://lab.llvm.org:8011/builders/lld-x86_64-darwin13/builds/26289/steps/build_Lld/logs/stdio

llvm-svn: 278914
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index 1b6ff23..804e362 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -504,7 +504,7 @@
   return {};
 }
 
-template <class ELFT> typename Expr LinkerScript<ELFT>::getLma(StringRef Name) {
+template <class ELFT> Expr LinkerScript<ELFT>::getLma(StringRef Name) {
   for (const std::unique_ptr<BaseCommand> &Base : Opt.Commands)
     if (auto *Cmd = dyn_cast<OutputSectionCommand>(Base.get()))
       if (Cmd->LmaExpr && Cmd->Name == Name)