fix a bunch of comment typos found by codespell.  Patch by
Luis Felipe Strano Moraes!

llvm-svn: 129559
diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp
index 752163a..2ff1d2db 100644
--- a/clang/lib/AST/ItaniumMangle.cpp
+++ b/clang/lib/AST/ItaniumMangle.cpp
@@ -1967,7 +1967,7 @@
   case Expr::ArraySubscriptExprClass: {
     const ArraySubscriptExpr *AE = cast<ArraySubscriptExpr>(E);
 
-    // Array subscript is treated as a syntactically wierd form of
+    // Array subscript is treated as a syntactically weird form of
     // binary operator.
     Out << "ix";
     mangleExpression(AE->getLHS());