Removed spurious lookup of the $__lldb_expr
selector when compiling an expression in an
Objective-C context.

<rdar://problem/15797390>

llvm-svn: 200950
diff --git a/lldb/source/Expression/ClangASTSource.cpp b/lldb/source/Expression/ClangASTSource.cpp
index dc12501..853d102 100644
--- a/lldb/source/Expression/ClangASTSource.cpp
+++ b/lldb/source/Expression/ClangASTSource.cpp
@@ -974,6 +974,9 @@
     }     
     ss.Flush();
     
+    if (strstr(ss.GetData(), "$__lldb"))
+        return; // we don't need any results
+    
     ConstString selector_name(ss.GetData());
     
     if (log)