[ELF] Simplify code a bit. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@263999 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/ELF/Symbols.cpp b/ELF/Symbols.cpp
index 3fffb15..ad33420 100644
--- a/ELF/Symbols.cpp
+++ b/ELF/Symbols.cpp
@@ -157,9 +157,7 @@
   if (Config->WarnCommon)
     warning("multiple common of " + A->getName());
   A->Alignment = B->Alignment = std::max(A->Alignment, B->Alignment);
-  if (A->Size < B->Size)
-    return -1;
-  return 1;
+  return A->Size < B->Size ? -1 : 1;
 }
 
 // Returns 1, 0 or -1 if this symbol should take precedence