Removed explicit NULL checks for shared pointers
and instead made us use implicit casts to bool.
This generated a warning in C++11.

<rdar://problem/11930775>


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@161559 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Expression/ClangFunction.cpp b/source/Expression/ClangFunction.cpp
index f716f67..ad6f0db 100644
--- a/source/Expression/ClangFunction.cpp
+++ b/source/Expression/ClangFunction.cpp
@@ -499,7 +499,7 @@
                                                                                  stop_others, 
                                                                                  discard_on_error, 
                                                                                  this_arg));
-    if (call_plan_sp == NULL)
+    if (!call_plan_sp)
         return eExecutionSetupError;
     
     call_plan_sp->SetPrivate(true);