fixes a typo caught by Jordan.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186171 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 527a647..ed13347 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -5435,7 +5435,7 @@
       // {...};
       S += '^';
       if (FD && OPT->getInterfaceDecl()) {
-        // Prevent redursive encoding of fields in some rare cases.
+        // Prevent recursive encoding of fields in some rare cases.
         ObjCInterfaceDecl *OI = OPT->getInterfaceDecl();
         SmallVector<const ObjCIvarDecl*, 32> Ivars;
         DeepCollectObjCIvars(OI, true, Ivars);