Fix comment typo.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@225340 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/ItaniumCXXABI.cpp

@@ -1122,7 +1122,7 @@ void ItaniumCXXABI::EmitCXXConstructors(const CXXConstructorDecl *D) {
   CGM.EmitGlobal(GlobalDecl(D, Ctor_Base));
 
   // The constructor used for constructing this as a complete class;
-  // constucts the virtual bases, then calls the base constructor.
+  // constructs the virtual bases, then calls the base constructor.
   if (!D->getParent()->isAbstract()) {
     // We don't need to emit the complete ctor if the class is abstract.
     CGM.EmitGlobal(GlobalDecl(D, Ctor_Complete));