Move common symbol related information from MCSectionData to MCSymbol.

llvm-svn: 238583
diff --git a/llvm/lib/MC/MCELFStreamer.cpp b/llvm/lib/MC/MCELFStreamer.cpp
index e470ab4..8224d63 100644
--- a/llvm/lib/MC/MCELFStreamer.cpp
+++ b/llvm/lib/MC/MCELFStreamer.cpp
@@ -328,7 +328,7 @@
     struct LocalCommon L = {Symbol, Size, ByteAlignment};
     LocalCommons.push_back(L);
   } else {
-    SD.setCommon(Size, ByteAlignment);
+    Symbol->setCommon(Size, ByteAlignment);
   }
 
   Symbol->setSize(MCConstantExpr::Create(Size, getContext()));