fix a bunch of comment typos found by codespell. Patch by
Luis Felipe Strano Moraes!
llvm-svn: 129559
diff --git a/clang/test/Driver/ast.c b/clang/test/Driver/ast.c
index 6e5857f..e9fbb06 100644
--- a/clang/test/Driver/ast.c
+++ b/clang/test/Driver/ast.c
@@ -22,5 +22,5 @@
// COMPILE-AST-PHASES: END
// FIXME: There is a problem with compiling AST's in that the input language is
-// not availabe for use by other tools (for example, to automatically add
+// not available for use by other tools (for example, to automatically add
// -lstdc++). We may need -x [objective-]c++-ast and all that goodness. :(
