Streamline Stmt::CollectingStats() and Decl::CollectingStats(). No functionality change.

llvm-svn: 90078
diff --git a/clang/lib/AST/DeclBase.cpp b/clang/lib/AST/DeclBase.cpp
index f0eb011..7e8579c 100644
--- a/clang/lib/AST/DeclBase.cpp
+++ b/clang/lib/AST/DeclBase.cpp
@@ -55,8 +55,7 @@
 }
 
 bool Decl::CollectingStats(bool Enable) {
-  if (Enable)
-    StatSwitch = true;
+  if (Enable) StatSwitch = true;
   return StatSwitch;
 }