Fix a typo in a comment Frits van Bommel spotted.

llvm-svn: 116614
diff --git a/clang/lib/CodeGen/CodeGenTBAA.cpp b/clang/lib/CodeGen/CodeGenTBAA.cpp
index 99a58a7..5aea0f2 100644
--- a/clang/lib/CodeGen/CodeGenTBAA.cpp
+++ b/clang/lib/CodeGen/CodeGenTBAA.cpp
@@ -56,7 +56,7 @@
     // Character types are special and can alias anything.
     // In C++, this technically only includes "char" and "unsigned char",
     // and not "signed char". In C, it includes all three. For now,
-    // the risk of exploting this detail in C++ seems likely to outweigh
+    // the risk of exploiting this detail in C++ seems likely to outweigh
     // the benefit.
     case BuiltinType::Char_U:
     case BuiltinType::Char_S: