Minor cleanups.

llvm-svn: 205578
diff --git a/lld/lib/Core/Resolver.cpp b/lld/lib/Core/Resolver.cpp
index 885f901..69688fe 100644
--- a/lld/lib/Core/Resolver.cpp
+++ b/lld/lib/Core/Resolver.cpp
@@ -198,14 +198,9 @@
                     << "\n");
 
   // Verify on zero-size atoms are pinned to start or end of section.
-  switch (atom.sectionPosition()) {
-  case DefinedAtom::sectionPositionStart:
-  case DefinedAtom::sectionPositionEnd:
+  if (atom.sectionPosition() == DefinedAtom::sectionPositionStart ||
+      atom.sectionPosition() == DefinedAtom::sectionPositionEnd) {
     assert(atom.size() == 0);
-    break;
-  case DefinedAtom::sectionPositionEarly:
-  case DefinedAtom::sectionPositionAny:
-    break;
   }
 
   // add to list of known atoms
diff --git a/lld/lib/Core/SymbolTable.cpp b/lld/lib/Core/SymbolTable.cpp
index 028ffec..067a799 100644
--- a/lld/lib/Core/SymbolTable.cpp
+++ b/lld/lib/Core/SymbolTable.cpp
@@ -367,10 +367,9 @@
 }
 
 bool SymbolTable::isDefined(StringRef sym) {
-  const Atom *atom = findByName(sym);
-  if (atom == nullptr)
-    return false;
-  return atom->definition() != Atom::definitionUndefined;
+  if (const Atom *atom = findByName(sym))
+    return atom->definition() != Atom::definitionUndefined;
+  return false;
 }
 
 void SymbolTable::addReplacement(const Atom *replaced,