Don't need to figure out the frame's module if we don't have any libraries

in the step-avoid-libraries list.

llvm-svn: 199944

lldb/source/Target/ThreadPlanStepInRange.cpp

@@ -279,9 +279,12 @@ ThreadPlanStepInRange::FrameMatchesAvoidCriteria ()
     StackFrame *frame = GetThread().GetStackFrameAtIndex(0).get();
     
     // Check the library list first, as that's cheapest:
+    bool libraries_say_avoid = false;
+
     FileSpecList libraries_to_avoid (GetThread().GetLibrariesToAvoid());
     size_t num_libraries = libraries_to_avoid.GetSize();
-    bool libraries_say_avoid = false;
+    if (num_libraries > 0)
+    {
         SymbolContext sc(frame->GetSymbolContext(eSymbolContextModule));
         FileSpec frame_library(sc.module_sp->GetFileSpec());
         
@@ -297,6 +300,7 @@ ThreadPlanStepInRange::FrameMatchesAvoidCriteria ()
                 }
             }
         }
+    }
     if (libraries_say_avoid)
         return true;