[gold commit] Fix bug with previous patch for unresolved TLS symbol

[Cary Coutant]

I needed to check that the output is executable before assuming that we
can replace the reference with zero.

-cary


2015-02-02  Cary Coutant  <ccoutant@google.com>

gold/
        * x86_64.cc (Target_x86_64::Relocate::relocate_tls): Check for
        executable output file.


diff --git a/gold/x86_64.cc b/gold/x86_64.cc
index a4aebc8..4543c8a 100644
--- a/gold/x86_64.cc
+++ b/gold/x86_64.cc
@@ -3784,7 +3784,9 @@ Target_x86_64<size>::Relocate::relocate_tls(
       break;

     case elfcpp::R_X86_64_GOTTPOFF:         // Initial-exec
-      if (gsym != NULL && gsym->is_undefined())
+      if (gsym != NULL
+         && gsym->is_undefined()
+         && parameters->options().output_is_executable())
        {
          Target_x86_64<size>::Relocate::tls_ie_to_le(relinfo, relnum,
                                                      NULL, rela,