Add the ability to disable individual log categories, rather
than just the entire log channel.

Add checks, where appropriate, to make sure a log channel/category has 
not been disabled before attempting to write to it.




git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@117715 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Target/ThreadPlanStepInRange.cpp b/source/Target/ThreadPlanStepInRange.cpp
index 92f78bb..2be9380 100644
--- a/source/Target/ThreadPlanStepInRange.cpp
+++ b/source/Target/ThreadPlanStepInRange.cpp
@@ -156,6 +156,7 @@
             if (bytes_to_skip != 0)
             {
                 func_start_address.Slide (bytes_to_skip);
+                log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP);
                 if (log)
                     log->Printf ("Pushing past prologue ");