Fixing a whole class of crashers and potential crashers related to data formatters eating up all the stack when an unknown class has to be summarized ; this should make the whole Objective-C summaries more stable

llvm-svn: 153712
diff --git a/lldb/examples/summaries/cocoa/NSData.py b/lldb/examples/summaries/cocoa/NSData.py
index 36f2133..f387d0f 100644
--- a/lldb/examples/summaries/cocoa/NSData.py
+++ b/lldb/examples/summaries/cocoa/NSData.py
@@ -106,7 +106,7 @@
 		statistics.metric_hit('code_notrun',valobj)
 	else:
 		wrapper = NSDataUnknown_SummaryProvider(valobj, class_data.sys_params)
-		statistics.metric_hit('unknown_class',str(valobj) + " seen as " + name_string)
+		statistics.metric_hit('unknown_class',valobj.GetName() + " seen as " + name_string)
 	return wrapper;
 
 def NSData_SummaryProvider (valobj,dict):