Misc. cleanups suggested by Aaron Ballman

llvm-svn: 240297
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 2e62ea6..cb1be8d 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -2480,8 +2480,7 @@
           << ((OldParam->getObjCDeclQualifier() & Decl::OBJC_TQ_CSNullability) != 0);
         S.Diag(OldParam->getLocation(), diag::note_previous_declaration);
       }
-    }
-    else {
+    } else {
       QualType NewT = NewParam->getType();
       NewT = S.Context.getAttributedType(
                          AttributedType::getNullabilityAttrKind(*Oldnullability),