Don't copy STT_SECTION from the inputs.

This matches the behavior of gold and bfd ld.

llvm-svn: 249326
diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index 105abd7..30f02ee 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -293,7 +293,7 @@
       Elf_Sym_Range Syms = File.getLocalSymbols();
       for (const Elf_Sym &Sym : Syms) {
         ErrorOr<StringRef> SymName = Sym.getName(File.getStringTable());
-        if (SymName && shouldKeepInSymtab(*SymName))
+        if (SymName && shouldKeepInSymtab<ELFT>(*SymName, Sym))
           SymTabSec.addSymbol(*SymName, true);
       }
     }