Fix comment typo.

llvm-svn: 225340
diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp
index fd299d1..deebab8 100644
--- a/clang/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp
@@ -1122,7 +1122,7 @@
   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));