Add some useful logging to the step log.

llvm-svn: 214836
diff --git a/lldb/source/Target/StopInfo.cpp b/lldb/source/Target/StopInfo.cpp
index 931cc0a..a37a407 100644
--- a/lldb/source/Target/StopInfo.cpp
+++ b/lldb/source/Target/StopInfo.cpp
@@ -318,7 +318,7 @@
 
         if (thread_sp)
         {
-            Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_BREAKPOINTS);
+            Log *log = lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_BREAKPOINTS | LIBLLDB_LOG_STEP);
 
             if (!thread_sp->IsValid())
             {