llvm-readobj: Do not print NULL StringRefs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180005 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-readobj/COFFDumper.cpp b/tools/llvm-readobj/COFFDumper.cpp
index d600bc3..56885c6 100644
--- a/tools/llvm-readobj/COFFDumper.cpp
+++ b/tools/llvm-readobj/COFFDumper.cpp
@@ -726,9 +726,9 @@
   if (Obj->getSymbolName(Symbol, SymbolName))
     SymbolName = "";
 
-  StringRef SectionName;
-  if (Section && Obj->getSectionName(Section, SectionName))
-    SectionName = "";
+  StringRef SectionName = "";
+  if (Section)
+    Obj->getSectionName(Section, SectionName);
 
   W.printString("Name", SymbolName);
   W.printNumber("Value", Symbol->Value);