Now that ASTMultiPtr is nothing more than a array reference, make it a MutableArrayRef.

This required changing all get() calls to data() and using the simpler constructors.

llvm-svn: 162501
diff --git a/clang/lib/Parse/ParseStmt.cpp b/clang/lib/Parse/ParseStmt.cpp
index 2dc8e65..72536fa 100644
--- a/clang/lib/Parse/ParseStmt.cpp
+++ b/clang/lib/Parse/ParseStmt.cpp
@@ -1918,7 +1918,7 @@
   if (FnBody.isInvalid()) {
     Sema::CompoundScopeRAII CompoundScope(Actions);
     FnBody = Actions.ActOnCompoundStmt(LBraceLoc, LBraceLoc,
-                                       MultiStmtArg(Actions), false);
+                                       MultiStmtArg(), false);
   }
 
   BodyScope.Exit();
@@ -1955,7 +1955,7 @@
   if (FnBody.isInvalid()) {
     Sema::CompoundScopeRAII CompoundScope(Actions);
     FnBody = Actions.ActOnCompoundStmt(LBraceLoc, LBraceLoc,
-                                       MultiStmtArg(Actions), false);
+                                       MultiStmtArg(), false);
   }
 
   BodyScope.Exit();