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

llvm-svn: 129559
diff --git a/clang/lib/CodeGen/CGException.cpp b/clang/lib/CodeGen/CGException.cpp
index cc4446f..0150ac6 100644
--- a/clang/lib/CodeGen/CGException.cpp
+++ b/clang/lib/CodeGen/CGException.cpp
@@ -672,7 +672,7 @@
       assert(I.next() == EHStack.end() && "EH filter is not end of EH stack");
       assert(!CatchAll.isValid() && "EH filter reached after catch-all");
 
-      // Filter scopes get added to the selector in wierd ways.
+      // Filter scopes get added to the selector in weird ways.
       EHFilterScope &Filter = cast<EHFilterScope>(*I);
       HasEHFilter = true;