Fix warning about unused variable.

I'm explicitly ignoring the warning by casting to void instead of
deleting the local assignment, because it's confusing to see a
function that fails when its return value evaluates to true.
But when you see that it's a std::error_code, it makes more sense.

llvm-svn: 310965

1 files changed, 3 insertions, 1 deletions

diff --git a/lld/COFF/Writer.cpp b/lld/COFF/Writer.cpp
index 6a19882c1e3..eec4d37ec43 100644
--- a/lld/COFF/Writer.cpp
+++ b/lld/COFF/Writer.cpp
@@ -268,8 +268,10 @@ static Optional<codeview::DebugInfo> loadExistingBuildId(StringRef Path) {
 
     const codeview::DebugInfo *ExistingDI = nullptr;
     StringRef PDBFileName;
-    if (auto EC = File.getDebugPDBInfo(ExistingDI, PDBFileName))
+    if (auto EC = File.getDebugPDBInfo(ExistingDI, PDBFileName)) {
+      (void)EC;
       return None;
+    }
     // We only support writing PDBs in v70 format.  So if this is not a build
     // id that we recognize / support, ignore it.
     if (ExistingDI->Signature.CVSignature != OMF::Signature::PDB70)