[ELF] Avoid unnecessary global variable.

Summary: It looks like this snuck through in r256143/D15383.

Reviewers: ruiu, grimar

Differential Revision: http://reviews.llvm.org/D16500

llvm-svn: 258599
diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index 6828b11..622ca04 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -95,6 +95,10 @@
   uintX_t SectionHeaderOff;
 
   llvm::StringMap<llvm::StringRef> InputToOutputSection;
+
+  // Flag to force GOT to be in output if we have relocations
+  // that relies on its address.
+  bool HasGotOffRel = false;
 };
 } // anonymous namespace