Fix enum typo

Author: kastiglione

lldb/source/Plugins/Language/Swift/SwiftFrameRecognizers.cpp

@@ -261,7 +261,7 @@ class SwiftExceptionBreakpointFrameRecognizer : public StackFrameRecognizer {
       {
         // Check if source is available for the identified frame.
         SymbolContext sc =
-            relevant_frame_sp->GetSymbolContext(eSymbolContextSymbol);
+            relevant_frame_sp->GetSymbolContext(eSymbolContextCompUnit);
         if (!sc.comp_unit)
           return {};
       }