* object.cc (need_decompressed_section): Add #ifdef ENABLE_THREADS.

gold/object.cc

@@ -550,6 +550,8 @@ Sized_relobj_file<size, big_endian>::find_eh_frame(
   return false;
 }
 
+#ifdef ENABLE_THREADS
+
 // Return TRUE if this is a section whose contents will be needed in the
 // Add_symbols task.
 
@@ -564,6 +566,8 @@ need_decompressed_section(const char* name)
   return false;
 }
 
+#endif
+
 // Build a table for any compressed debug sections, mapping each section index
 // to the uncompressed size and (if needed) the decompressed contents.